Endnotes

PROLOGUE

THE DAY THE WORLD MAP CHANGED

1. The date, 114th plenary meeting, agenda context and draft symbol A/80/L.104 are controlled by the official General Assembly schedule and draft text. Sources: United Nations, “80th General Assembly schedule - 114th plenary meeting”; United Nations General Assembly, “A/80/L.104 - Correct the map”.

2. The African Union’s backing predates the UN vote; Assembly/AU/Dec.959(XXXIX) adopted Equal Earth for the AU initiative and urged curriculum revision. Sources: African Union Assembly, “Decision on ‘Correcting the Map of Africa on the Globe’”.

3. Equal Earth was introduced in 2018 by Bojan Šavrič, Tom Patterson and Bernhard Jenny as an equal-area pseudocylindrical world projection. Sources: Bojan Šavrič; Tom Patterson; Bernhard Jenny, “The Equal Earth map projection”.

4. EPSG:8857 is WGS 84 / Equal Earth Greenwich and predates the 2026 political endorsement. Sources: EPSG / IOGP, “WGS 84 / Equal Earth Greenwich - EPSG:8857”.

5. The 164–1–6 vote, the United States as the sole vote against, the six abstentions and Togo’s presentation on behalf of the African Group are recorded in official UN meeting coverage. Sources: United Nations Meetings Coverage and Press Releases, “General Assembly Adopts ‘Correct the Map’ Resolution at 114th Plenary Meeting”.

6. The adopted resolution symbol is A/RES/80/307. Sources: United Nations General Assembly, “Correct the map: rebalancing global cartographic representation and promoting equitable representation of the world’s regions, particularly Africa”.

7. The resolution is non-binding and encourages equal-area representations, especially where comparative area matters; it does not ban Mercator or compel a universal technical migration. Sources: United Nations General Assembly, “A/80/L.104 - Correct the map”; United Nations General Assembly, “Correct the map: rebalancing global cartographic representation and promoting equitable representation of the world’s regions, particularly Africa”.

8. The AU’s immediate post-vote statement explicitly called for progressive uptake, reinforcing the distinction between political endorsement and completed implementation. Sources: African Union Commission, “Communiqué of the Chairperson on the adoption of the Correct the Map resolution”.

9. Mercator’s 1569 wall map and its explicit navigational purpose are supported by the BnF catalogue and modern historical reconstruction; the rhumb-line and scale-growth explanation is technical rather than political. Sources: Gerardus Mercator, “Nova et aucta orbis terrae descriptio ad usum navigantium emendate accomodata”; Joaquim Alves Gaspar; Henrique Leitão, “Squaring the Circle: How Mercator Constructed His Projection in 1569”; PROJ contributors, “Mercator - PROJ documentation”.

CHAPTER 1 THE IMPOSSIBLE MAP

1. The general projection trade-off discussion follows standard cartographic treatment: no flat world map preserves area, angle, distance, direction and shape everywhere at once. Sources: John P. Snyder, “Map Projections: A Working Manual”; Michael T. Gastner; Krisztián Kerkovits, “Choosing World Map Projections: When Equal-Area Is Appropriate (and Why There Is No Single “Correct” Projection)”.

2. Harry Beck’s diagrammatic Underground map was introduced in 1933 and deliberately prioritised network legibility over geographic distance. Sources: Transport for London, “Harry Beck’s Tube map”.

3. Equal-area projections preserve relative area, conformal projections preserve local angles, and compromise projections distribute rather than eliminate distortion. Sources: John P. Snyder, “Map Projections: A Working Manual”; U.S. Geological Survey Educational Resources, “Map Projections educational PDF”.

4. Tissot’s indicatrix is the diagnostic device used here to explain local angular and area distortion. Sources: Aileen Buckley, “Tissot's indicatrix helps illustrate map projection distortion”; John P. Snyder, “Map Projections: A Working Manual”.

5. Gauss’s 1827 work on curved surfaces supplies the mathematical background for the claim that intrinsic curvature cannot be transferred unchanged from a sphere to a plane. Sources: Carl Friedrich Gauss, “General Investigations of Curved Surfaces of 1827 and 1825”.

6. Sources: Gerardus Mercator, “Nova et aucta orbis terrae descriptio ad usum navigantium emendate accomodata”; PROJ contributors, “Mercator - PROJ documentation”.

CHAPTER 2 THE SAILOR’S MAP

1. The 1569 Nova et aucta orbis terrae descriptio was an eighteen-sheet wall map published at Duisburg in August 1569; surviving copies vary slightly in assembled dimensions. Sources: Gerardus Mercator, “Nova et aucta orbis terrae descriptio ad usum navigantium emendate accomodata”.

2. Mercator’s title explicitly identifies navigation as the intended use of the map. Sources: Gerardus Mercator, “Nova et aucta orbis terrae descriptio ad usum navigantium emendate accomodata”.

3. A rhumb line is a path of constant bearing and appears as a straight line on the Mercator projection; great-circle routes are generally shorter over long distances. Sources: PROJ contributors, “Mercator - PROJ documentation”; John P. Snyder, “Map Projections: A Working Manual”.

4. Mercator is conformal: local linear scale increases with latitude. The secant-latitude examples are spherical approximations, not country-wide inflation factors. Sources: PROJ contributors, “Mercator - PROJ documentation”; John P. Snyder, “Map Projections: A Working Manual”.

5. A true Mercator projection cannot represent the poles at finite projected coordinates. Sources: PROJ contributors, “Mercator - PROJ documentation”.

6. Gaspar and Leitão reconstruct how Mercator could have constructed the 1569 projection with sixteenth-century mathematical and practical methods, avoiding anachronistic assumptions about modern formulas. Sources: Joaquim Alves Gaspar; Henrique Leitão, “Squaring the Circle: How Mercator Constructed His Projection in 1569”.

7. Evidence for nautical adoption after 1569 shows a slower and more complicated process rather than instant universal uptake. Sources: Joaquim Alves Gaspar; Henrique Leitão, “Squaring the Circle: How Mercator Constructed His Projection in 1569”; Mark Monmonier, “Rhumb Lines and Map Wars: A Social History of the Mercator Projection”.

8. Gerardus Mercator’s 1569 map, later Mercator projection practice and modern Web/Pseudo-Mercator are related but distinct historical and technical objects. Sources: Gerardus Mercator, “Nova et aucta orbis terrae descriptio ad usum navigantium emendate accomodata”; EPSG / IOGP, “WGS 84 / Pseudo-Mercator - EPSG:3857”; PROJ contributors, “Web Mercator / Pseudo Mercator - PROJ documentation”.

CHAPTER 3 WHEN THE USEFUL MAP BECAME THE WORLD

1. An 1871 Wellington bookseller advertisement offered both hemisphere maps and world maps on Mercator’s projection, evidence that Mercator was one format among several in the New Zealand market. Sources: Bookseller advertisement, “1871 New Zealand bookseller advertisement listing school maps including 'Maps of the World, or Mercator's Projection'”.

2. Historical Mercator world maps from the eighteenth and nineteenth centuries document the projection’s broader atlas and display afterlife. Sources: Robert Morden; William Berry, “To Capt. John Wood this map of the world, drawn according to Mercators projection”; John Melish; Samuel Harrison; Hugh Bridport; George Murray, “The world on Mercator's projection”; A & C Black, “The World, on Mercator's Projection”; Unknown manuscript cartographer, “Map of the world on the Mercator projection”.

3. Awanui Native School equipment records in 1876 included a Mercator world map. Sources: New Zealand education inspecting officers, “Native Schools inspection reports: Awanui School equipment included World on Mercator's projection”.

4. In 1877 a Native Schools inspector wrote that the Mercator world map was “not suited to the school” and requested a Pacific map. Source: New Zealand education inspecting officer, “Native Schools report: inspector says the Mercator world map 'is not suited to the school'”.

5. The 1879 Waihou School inspection recorded “Mercator’s World (bad)” and requested hemisphere maps; other Native School inspections record Mercator maps alongside regional and hemisphere maps. Sources: New Zealand education inspecting officer, “Waihou School inspection: 'Mercator's World (bad)' and hemisphere maps requested”; New Zealand education inspecting officers, “Native Schools inspection report listing Mercator maps at Taumarere, Te Ti and other schools”.

6. Teacher examinations in 1880, 1886 and 1888 required knowledge of Mercator’s projection, its construction or its characteristic advantages and defects. Sources: New Zealand Department of Education, “New Zealand teacher examination, Class D Geography: explain Mercator projection advantages and disadvantages”; New Zealand Department of Education, “New Zealand teacher examination, Class D Geography: explain how flat maps represent Earth and the nature of Mercator projection”; New Zealand Department of Education, “New Zealand teacher examination: principle, advantages and characteristic defects of Mercator projection”.

7. An 1890 exhibition report described a Māori pupil’s hand-drawn world map on Mercator’s projection. Source: Evening Star reporter, “1890 exhibition report on map drawing by Native school pupils, including a world map on Mercator's projection”.

CHAPTER 4 WHO GETS THE MIDDLE?

1. The 1884 International Meridian Conference proceedings are the primary source for the shipping-use table, delegate arguments and formal resolutions. Sources: International Meridian Conference, “International Conference Held at Washington for the Purpose of Fixing a Prime Meridian and a Universal Day - Protocols”.

2. Greenwich’s prior practical prevalence in navigation is reflected in the conference shipping table and provided an important political and technical advantage. Sources: International Meridian Conference, “International Conference Held at Washington for the Purpose of Fixing a Prime Meridian and a Universal Day - Protocols”; Royal Observatory Greenwich historical project, “The adoption of a Prime Meridian and the International Meridian Conference of 1884”.

3. French and other delegates proposed alternatives, including neutral-meridian ideas; the proceedings demonstrate that the choice was negotiated. Sources: International Meridian Conference, “International Conference Held at Washington for the Purpose of Fixing a Prime Meridian and a Universal Day - Protocols”.

4. The session record on 13 October shows 21 votes for Greenwich, San Domingo against, with Brazil and France abstaining. Sources: International Meridian Conference, “International Conference Held at Washington for the Purpose of Fixing a Prime Meridian and a Universal Day - Protocols”.

5. The Final Act adopted on 22 October records the Greenwich resolution as 22–1–2, with Salvador included among the affirmative states; this differs from the earlier roll-call record. Sources: International Meridian Conference, “International Conference Held at Washington for the Purpose of Fixing a Prime Meridian and a Universal Day - Protocols”; International Meridian Conference, “International Conference Held at Washington for the Purpose of Fixing a Prime Meridian and a Universal Day”.

6. A prime meridian is a geographic longitude reference; it is not the same concept as the central meridian chosen for a particular projected map. Sources: PROJ contributors, “Equal Earth - PROJ documentation”; PROJ contributors, “Cartographic projection - PROJ longitude wrapping and prime meridian documentation”.

7. EPSG:8857 is specifically Greenwich-centred. An Equal Earth map can use a different central meridian without thereby becoming another EPSG:8857 instance. Sources: EPSG / IOGP, “WGS 84 / Equal Earth Greenwich - EPSG:8857”; PROJ contributors, “Equal Earth - PROJ documentation”.

CHAPTER 5 DRAW A LINE, CLAIM A WORLD

1. British Museum kudurru objects support the opening discussion of Mesopotamian boundary records and the ambition to make land grants and limits durable. Sources: Babylonian state / British Museum, “Kassite kudurru recording land transfer and boundaries”; Babylonian state / British Museum, “Kudurru of Marduk-nadin-ahhe”.

2. The Treaty of Tordesillas was signed on 7 June 1494 and specified a pole-to-pole line 370 leagues west of the Cape Verde islands; practical placement remained difficult. Sources: Crowns of Castile/Aragon and Portugal / UNESCO, “Treaty of Tordesillas”.

3. The treaty’s line allocated European imperial claims over territories that were incompletely mapped by the signatories and inhabited by peoples outside the agreement. Sources: Crowns of Castile/Aragon and Portugal / UNESCO, “Treaty of Tordesillas”.

4. Article V of the Treaty of Guadalupe Hidalgo referred to John Disturnell’s 1847 map and required commissioners and surveyors to run and mark the boundary. Sources: United States and Mexico / U.S. National Archives, “Treaty of Guadalupe Hidalgo (1848)”.

5. The Agreement → Map → Survey → Monument → Administration sequence is a synthesis of the treaty’s textual, cartographic and field-survey machinery. Sources: United States and Mexico / U.S. National Archives, “Treaty of Guadalupe Hidalgo (1848)”.

6. In the Burkina Faso/Mali frontier case, the International Court of Justice treated maps in ordinary circumstances as information/evidence rather than territorial title in themselves. Sources: International Court of Justice, “Frontier Dispute (Burkina Faso/Republic of Mali), Judgment of 22 December 1986”.

7. Dayton Annex 2 gave mapped Inter-Entity Boundary material a controlling role; the 1:50,000 mapped line was accepted as controlling and definitive for implementation. Sources: Bosnia and Herzegovina parties, “General Framework Agreement for Peace in Bosnia and Herzegovina, Annex 2: Agreement on Inter-Entity Boundary Line and Related Issues”.

CHAPTER 6 SURVEY AFTER CONQUEST

1. The Native Land Court’s role in converting customary interests into titles recognised by colonial law is supported by Te Ara’s institutional history. Sources: New Zealand History, “Native Land Court created”.

2. The 1840 Te Aro comparison is supported by Te Ara’s account that Māori pulled up survey pegs after New Zealand Company surveyors began marking a town site on land they said had not been sold. Sources: Te Ara - The Encyclopedia of New Zealand, “Māori and maps of colonisation”.

3. The abolition of the provinces in 1876 led to a central Department of the Surveyor-General and a more unified national surveying framework under John Turnbull Thomson. Sources: Te Ara - The Encyclopedia of New Zealand, “Government surveying and mapping, 1870–1900”.

4. Survey requirements and survey costs were integral to Native Land Court processes; Te Ara records cases where survey costs consumed roughly 20 per cent or more of a block’s value. Sources: Te Ara - The Encyclopedia of New Zealand, “Surveying and other costs, 1880–1900”.

5. Sources: Te Ara - The Encyclopedia of New Zealand, “Surveying and other costs, 1880–1900”.

6. Sources: Crown and Taranaki Iwi, “Taranaki Iwi Deed of Settlement”; Te Kotahitanga o Te Āti Awa, “Parihaka historical material”.

7. The distinction between technical precision and political authority is analytical: accurate measurement does not itself decide whether the legal or political order being implemented is legitimate. Source: J. B. Harley, “Deconstructing the Map”.

8. The source balance for the Waimate Plain is strengthened by the Taranaki Iwi Deed of Settlement and Te Kotahitanga o Te Āti Awa material concerning promised reserves, cultivations, burial places and peaceful eviction of surveyors. Sources: Crown and Taranaki Iwi, “Taranaki Iwi Deed of Settlement”; Te Kotahitanga o Te Āti Awa, “Parihaka historical material”.

9. Government survey activity on the Waimate Plain in 1879, peg removal, ploughing and fencing by Parihaka followers, and the wider non-violent resistance chronology are supported by New Zealand public-history sources. Sources: New Zealand History, “Parihaka ploughing campaign begins”.

10. The 5 November 1881 invasion/entry into Parihaka, arrests of Te Whiti-o-Rongomai and Tohu Kākahi, and state suppression are part of the established Parihaka chronology. Source: New Zealand History, “Parihaka ploughing campaign begins”.

CHAPTER 7 MAPS WORTH STEALING

1. The Cantino Planisphere dates to 1502 and is associated with Alberto Cantino’s acquisition of privileged Portuguese geographic information for Ercole I d’Este. Sources: Portuguese state cartography, copied for Alberto Cantino, “Cantino Planisphere”.

2. Portuguese secrecy around nautical and cartographic information provides the institutional context for the Cantino episode; the exact bribery mechanics remain attributed rather than eyewitness evidence. Source: Portuguese state cartography, copied for Alberto Cantino, “Cantino Planisphere”.

3. Institutional and curatorial accounts support the surviving narrative of Cantino’s acquisition and the map’s later history. Source: Portuguese state cartography, copied for Alberto Cantino, “Cantino Planisphere”.

4. Alexander J. Kent’s peer-reviewed study of the Soviet 1:10,000 plan of Dover supports the 1972 compilation, 1974 printing, strategic-object detail and discussion of errors/inherited information. Sources: Alexander J. Kent, “The Soviet Military 1:10,000 City Plan of Dover, UK (1974)”.

5. The Soviet Dover material shows that highly detailed military mapping could contain both extraordinary intelligence value and mistakes. Sources: Alexander J. Kent, “The Soviet Military 1:10,000 City Plan of Dover, UK (1974)”.

6. The post-Soviet commercial circulation of formerly secret Soviet military maps is part of the documented afterlife of that mapping programme. Sources: Alexander J. Kent, “The Soviet Military 1:10,000 City Plan of Dover, UK (1974)”.

CHAPTER 8 THE MAP GOES TO WAR

1. The 1:1,800 scale means one centimetre on the map represents eighteen metres on the ground. Source: New Zealand Expeditionary Force / Auckland Libraries, “ANZAC New Zealand Division trench plans at Gallipoli”.

2. The Auckland Libraries NZEF trench plan of the Apex on Rhododendron Spur is a 1915 sheet at 1:1,800, about 41 × 56 cm. Source: New Zealand Expeditionary Force / Auckland Libraries, “ANZAC New Zealand Division trench plans at Gallipoli”.

3. Lieutenant-Colonel William Malone was killed by an Allied shell at about 5 p.m.; the source does not securely identify a particular firing battery. Source: Manatū Taonga / New Zealand History, “Wellington Battalion captures Chunuk Bair”.

4. The Wellington Battalion occupied Chunuk Bair before dawn on 8 August 1915; by relief that evening only 70 of 760 men were still standing. Source: Manatū Taonga / New Zealand History, “Wellington Battalion captures Chunuk Bair”.

5. The UK National Archives records production of about 34 million official British military maps for the Western Front and documents the scale hierarchy used for administration, artillery, trench work and local operations. Sources: British War Office / UK National Archives, “First World War trench-map grid system”.

6. The relationship between wartime map scale and what becomes actionable is grounded in the documented military-map scale hierarchy. Sources: British War Office / UK National Archives, “First World War trench-map grid system”; New Zealand Expeditionary Force / Auckland Libraries, “ANZAC New Zealand Division trench plans at Gallipoli”.

CHAPTER 9 THE LINE THAT SURVIVED THE WAR

1. The 30 November 1948 Jerusalem ceasefire-map episode involved Moshe Dayan and Abdullah el-Tell; the surviving map evidence is connected to Israel State Archives material reviewed by the Law Library of Congress. Sources: Ruth Levush, “International Law: November 30, 1948, Cease-Fire Agreement and Demarcation of No-Man’s-Land in the Jerusalem Area”; United Nations, “Israel-Jordan General Armistice Agreement - Cablegram from UN Acting Mediator, Map (Green Line)”.

2. The red and green grease-pencil strokes were 3–4 mm wide and could represent roughly 60–80 metres in the city; the current text does not rely on an unsupported exact map scale. Sources: Ruth Levush, “International Law: November 30, 1948, Cease-Fire Agreement and Demarcation of No-Man’s-Land in the Jerusalem Area”.

3. The Israel–Jordan General Armistice Agreement of 3 April 1949 defined armistice demarcation lines without prejudice to later territorial settlements or claims. Sources: United Nations, “Israel-Jordan General Armistice Agreement - Cablegram from UN Acting Mediator, Map (Green Line)”.

4. The 1949 armistice lines became known as the Green Line and structured military and administrative geography without becoming, by that fact alone, a final sovereign boundary. Sources: United Nations, “Israel-Jordan General Armistice Agreement - Cablegram from UN Acting Mediator, Map (Green Line)”.

5. The Korean Armistice Agreement of 27 July 1953 established the Military Demarcation Line, required two-kilometre withdrawals by each side and thereby created the roughly four-kilometre-wide DMZ. Sources: United Nations Command; Korean People's Army; Chinese People's Volunteers, “Korean War Armistice Agreement”.

6. The armistice distinguishes the central Military Demarcation Line from the wider DMZ and is not itself a peace treaty. Sources: United Nations Command; Korean People's Army; Chinese People's Volunteers, “Korean War Armistice Agreement”.

CHAPTER 10 FINDING YOURSELF ON EARTH

1. John Harrison’s H4 was carried by William Harrison on the 1761 Jamaica trial; Royal Museums Greenwich provides the institutional account used for the voyage and Madeira-prediction episode. Sources: Royal Museums Greenwich, “Longitude found - the story of Harrison's timekeepers”.

2. Longitude from time difference follows the Earth’s approximately 360-degree rotation in twenty-four hours. Sources: John P. Snyder, “Map Projections: A Working Manual”.

3. Institutional histories identify 1909 as the beginning of the national geodetic triangulation programme and 1949 as the completion and implementation era associated with NZGD49. Sources: National Library of New Zealand, “Surveying and the cadastre”; Toitū Te Whenua LINZ, “New Zealand Geodetic Datum 2000 (NZGD2000)”.

4. LINZ records that NZGD1949 used the International 1924 ellipsoid, was static and accumulated regional distortions of up to about five metres relative to later geodetic needs. Sources: Toitū Te Whenua LINZ, “New Zealand Geodetic Datum 2000 (NZGD2000)”; Toitū Te Whenua LINZ, “Understanding datums and projections”.

5. NZGD2000 was implemented in 1998, uses GRS80, aligns to ITRF96 at epoch 2000.0 and includes a deformation model. Source: Toitū Te Whenua LINZ, “New Zealand Geodetic Datum 2000 (NZGD2000)”.

6. LINZ’s dynamic-datum guidance supports the approximate five-centimetre-per-year tectonic-motion explanation. Source: Toitū Te Whenua LINZ, “New Zealand Geodetic Datum 2000 (NZGD2000)”.

7. The post-Kaikōura deformation-model update produced horizontal coordinate changes of up to about six metres in the most affected areas. Source: Toitū Te Whenua LINZ, “New Zealand Geodetic Datum 2000 (NZGD2000)”.

CHAPTER 11 FROM SECRET SATELLITES TO THE PHONE IN YOUR POCKET

1. CORONA/Discoverer XIV launched on 18 August 1960 and its film capsule was recovered on 19 August; the successful mission returned roughly 3,000 feet of film and extensive coverage of Soviet territory. Sources: National Reconnaissance Office, “CORONA”.

2. CORONA’s physical film-return system and mid-air recovery illustrate the pre-digital mechanics of satellite reconnaissance. Sources: National Reconnaissance Office, “CORONA”.

3. The GPS development sequence distinguishes the military origins of satellite positioning from later civilian availability. Source: Ronald Reagan / White House, “Statement by Deputy Press Secretary Speakes on the Soviet Attack on a Korean Civilian Airliner”.

4. The 1983 destruction of Korean Air Lines Flight 007 accelerated and formalised the U.S. commitment to make GPS available for international civil use when operational. Source: Ronald Reagan / White House, “Statement by Deputy Press Secretary Speakes on the Soviet Attack on a Korean Civilian Airliner”.

5. Selective Availability was discontinued in May 2000, producing the familiar improvement in unaugmented civilian GPS accuracy. Sources: U.S. Government / GPS.gov, “Selective Availability”.

6. A GNSS position, its datum/CRS, the projected basemap and the display projection are different layers; GPS does not itself determine which world map projection a screen uses. Sources: Toitū Te Whenua LINZ, “Understanding datums and projections”; Toitū Te Whenua LINZ, “Geospatial data types”.

CHAPTER 12 THE SECRET NUMBERS BEHIND EVERY DIGITAL MAP

1. EPSG identifiers are database identifiers for coordinate reference systems and related objects, not versions or rankings of the Earth. Sources: EPSG / IOGP, “WGS 84 / Equal Earth Greenwich - EPSG:8857”; EPSG / IOGP, “WGS 84 / Pseudo-Mercator - EPSG:3857”; EPSG / IOGP, “WGS 84 - EPSG:4326”; EPSG / IOGP, “NZGD2000 / New Zealand Transverse Mercator 2000 - EPSG:2193”.

2. EPSG:4326 is WGS 84, a geographic 2D CRS; its formal axis order is latitude then longitude even though many applications display or accept longitude-latitude conventions. Sources: EPSG / IOGP, “WGS 84 - EPSG:4326”; Toitū Te Whenua LINZ, “Axis ordering in LINZ web services”.

3. Assigning a CRS tells software how existing numbers should be interpreted; transforming coordinates computes new numbers in another CRS. Sources: QGIS Project, “Working with Projections - QGIS 3.44 documentation”; QGIS Project, “Lesson: Reprojecting and Transforming Data”.

4. EPSG:3857 is WGS 84 / Pseudo-Mercator, a projected CRS widely used for web mapping and visualisation. Sources: EPSG / IOGP, “WGS 84 / Pseudo-Mercator - EPSG:3857”; PROJ contributors, “Web Mercator / Pseudo Mercator - PROJ documentation”.

5. EPSG:2193 is NZGD2000 / New Zealand Transverse Mercator 2000, a projected CRS used for New Zealand mapping. Sources: EPSG / IOGP, “NZGD2000 / New Zealand Transverse Mercator 2000 - EPSG:2193”; Toitū Te Whenua LINZ, “New Zealand Transverse Mercator 2000 (NZTM2000)”.

6. EPSG:8857 is WGS 84 / Equal Earth Greenwich, a projected CRS for very-small-scale equal-area world mapping. Source: EPSG / IOGP, “WGS 84 / Equal Earth Greenwich - EPSG:8857”.

7. EPSG:8857 is Greenwich-centred; EPSG:8858 is Americas-centred at 90 degrees west; and EPSG:8859 is Asia-Pacific-centred at 150 degrees east. Other central meridians can be defined without inheriting one of these identifiers. Sources: EPSG / IOGP, “WGS 84 / Equal Earth Greenwich - EPSG:8857”; EPSG / IOGP, “WGS 84 / Equal Earth Americas - EPSG:8858”; EPSG / IOGP, “WGS 84 / Equal Earth Asia-Pacific - EPSG:8859”; PROJ contributors, “Equal Earth - PROJ documentation”.

CHAPTER 13 THE JOKE CODE THAT ATE THE WEB

1. Christopher Schmidt’s 6 August 2007 post records the OpenLayers/community use of 900913 as a humorous GOOGLE-like identifier for the emerging web-map projection. Sources: OpenStreetMap contributors, “Web Mercator - history”.

2. Google’s tile-coordinate documentation supports the square tile-pyramid logic: one world tile at zoom zero and a doubling of the tile matrix along each axis at each zoom level. Source: Google, “Map and Tile Coordinates - Maps JavaScript API”.

3. Web/Pseudo-Mercator differs from classic ellipsoidal Mercator and belongs to the engineering history of web mapping. Sources: EPSG / IOGP, “WGS 84 / Pseudo-Mercator - EPSG:3857”; PROJ contributors, “Web Mercator / Pseudo Mercator - PROJ documentation”; Sarah E. Battersby; Michael P. Finn; E. Lynn Usery; Kristina H. Yamamoto, “Implications of Web Mercator and Its Use in Online Mapping”.

4. The practical Web Mercator world is clipped near ±85.0511 degrees to form a finite square tile extent. Sources: Google, “Map and Tile Coordinates - Maps JavaScript API”; EPSG / IOGP, “WGS 84 / Pseudo-Mercator - EPSG:3857”.

5. 900913 was unofficial and was never an EPSG-issued code. Source: OpenStreetMap contributors, “Web Mercator - history”.

6. The EPSG sequence moved through Popular Visualisation CRS / Mercator (EPSG:3785) before the modern EPSG:3857 identifier; the former was deprecated in 2009. Sources: OpenStreetMap contributors, “Web Mercator - history”; EPSG / IOGP, “WGS 84 / Pseudo-Mercator - EPSG:3857”.

7. Compatibility, tile geometry and network effects help explain the persistence of Web Mercator as infrastructure. Sources: Sarah E. Battersby; Michael P. Finn; E. Lynn Usery; Kristina H. Yamamoto, “Implications of Web Mercator and Its Use in Online Mapping”; Toitū Te Whenua LINZ, “WGS 84 / Web Mercator tile scale set definition”.

CHAPTER 14 WHERE THE DATABASE CUTS THE WORLD

1. RFC 7946 defines GeoJSON and supplies the Fiji antimeridian-crossing bounding-box example. Sources: Howard Butler et al., “RFC 7946 - The GeoJSON Format”.

2. A known RFC erratum changes a corner-label description in the Fiji example. Source: Howard Butler et al., “RFC 7946 - The GeoJSON Format”.

3. The bounding box [177.0, -20.0, -178.0, -16.0] is a compact five-degree antimeridian-crossing extent; interpreting the longitudes as an ordinary minimum-to-maximum interval gives the approximately 355-degree complement. Source: Howard Butler et al., “RFC 7946 - The GeoJSON Format”.

4. RFC 7946 recommends cutting geometries at the antimeridian for interoperability. Source: Howard Butler et al., “RFC 7946 - The GeoJSON Format”.

5. Longitude can also be represented in 0–360 form without changing the underlying datum; software wrapping and display seams are representation choices. Sources: GDAL contributors, “ogr2ogr - wrapdateline”; PROJ contributors, “Cartographic projection - PROJ longitude wrapping and prime meridian documentation”.

6. The mathematical antimeridian at 180 degrees is distinct from the civil/political International Date Line, whose deviations respond to national and administrative choices. Sources: U.S. Naval Observatory, “The International Date Line”; Legislative Assembly of Samoa, “International Date Line Act 2011”.

7. Samoa’s 2011 legislation is an example of a state changing its civil date-line relationship without moving the geometric antimeridian. Source: Legislative Assembly of Samoa, “International Date Line Act 2011”.

CHAPTER 15 THE PLACE THE WEB MAP CANNOT SHOW

1. Mercator cannot place the poles at finite coordinates; Web/Pseudo-Mercator therefore uses a practical latitude cutoff near ±85.0511 degrees for its square tiled world. Sources: EPSG / IOGP, “WGS 84 / Pseudo-Mercator - EPSG:3857”; PROJ contributors, “Web Mercator / Pseudo Mercator - PROJ documentation”; Google, “Map and Tile Coordinates - Maps JavaScript API”.

2. The cutoff is a property of the coordinate/display system, not a natural or political boundary. Sources: EPSG / IOGP, “WGS 84 / Pseudo-Mercator - EPSG:3857”.

3. EPSG:3031 is the official WGS 84 / Antarctic Polar Stereographic projected CRS definition. Source: EPSG / IOGP, “WGS 84 / Antarctic Polar Stereographic - EPSG:3031”.

4. The British Antarctic Survey Antarctic Digital Database uses WGS 84 / Antarctic Polar Stereographic, EPSG:3031, for its datasets. Source: British Antarctic Survey / SCAR community, “Antarctic Digital Database”.

5. Different Antarctic mapping tasks use different polar systems and parameters. Sources: EPSG / IOGP, “WGS 84 / Antarctic Polar Stereographic - EPSG:3031”; National Snow and Ice Data Center, “A Guide to NSIDC's Polar Stereographic Projection”.

6. The polar example demonstrates why a projection appropriate to one global web-map architecture may be inappropriate for detailed polar work. Sources: British Antarctic Survey / SCAR community, “Antarctic Digital Database”; EPSG / IOGP, “WGS 84 / Antarctic Polar Stereographic - EPSG:3031”.

CHAPTER 16 THE MAP WAS NEVER EMPTY

1. Te Ara documents early Māori geographic knowledge beyond European-style planimetric sheets. Sources: Te Ara - The Encyclopedia of New Zealand, “Māori and maps of colonisation”.

2. Marshallese chart traditions demonstrate physical representations of swell and island relationships learned differently from European paper charts. Source: Smithsonian National Museum of Natural History, “Stick Navigation Chart”.

3. The 1885 east Greenland wooden representations are used narrowly as examples of tactile geographic representation; curatorial evidence indicates that surviving objects may have served explanatory or storytelling rather than routine navigation functions. Source: Greenland National Museum & Archives, “Mapping NUNAAT: Rethinking Greenlandic Cartographic Heritage”.

4. Eckstein and Schwarz interpret Tupaia’s chart as an encounter and translation between navigational systems. Sources: Lars Eckstein; Anja Schwarz, “The Making of Tupaia's Map: A Story of the Extent and Mastery of Polynesian Navigation, Competing Systems of Wayfinding on James Cook's Endeavour, and the Invention of an Ingenious Cartographic System”.

5. The Tuki episode is dated to 1793, including forced removal to Norfolk Island, the chalk-to-paper sequence and the disproportionate emphasis on the far north in the surviving representation. Source: Te Ara - The Encyclopedia of New Zealand, “Māori and maps of colonisation”.

6. Archival evidence supports the depiction of a wairua path towards the underworld in Tuki’s map; preferred tikanga-sensitive terminology remains for specialist review. Source: Te Ara - The Encyclopedia of New Zealand, “Māori and maps of colonisation”.

7. Ngā Pou Taunaha o Aotearoa / New Zealand Geographic Board material supports the discussion of Māori place names entering official geographic systems through research, consultation and Treaty settlement processes. Sources: Ngā Pou Taunaha o Aotearoa / New Zealand Geographic Board, “Tangata whenua place-name maps - Te Waipounamu and Te Ika-a-Māui, second edition 2023”.

8. Kā Huru Manu documents Hori Kerei Taiaroa’s 1880 gathering and collation of Ngāi Tahu place-name and mahinga-kai knowledge and its later relationship to archive, claim evidence and contemporary GIS. Sources: Kā Huru Manu, “Ngāi Tahu 1880 Mahinga Kai Map”.

9. Peluso’s 1995 article is the source for ‘counter-mapping’ in Kalimantan; Chapin, Lamb and Threlkeld document the wider expansion and diversity of Indigenous mapping practices. Sources: Nancy Lee Peluso, “Whose Woods Are These? Counter-Mapping Forest Territories in Kalimantan, Indonesia”; Mac Chapin; Zachary Lamb; Bill Threlkeld, “Mapping Indigenous Lands”.

10. Te Mana Raraunga supplies the Māori Data Sovereignty principles; the CARE Principles supply Collective Benefit, Authority to Control, Responsibility and Ethics. Sources: Te Mana Raraunga, “Principles of Māori Data Sovereignty”; Global Indigenous Data Alliance, “CARE Principles for Indigenous Data Governance”.

11. Sources: Lars Eckstein; Anja Schwarz, “The Making of Tupaia's Map: A Story of the Extent and Mastery of Polynesian Navigation, Competing Systems of Wayfinding on James Cook's Endeavour, and the Invention of an Ingenious Cartographic System”; Te Mana Raraunga, “Principles of Māori Data Sovereignty”; Global Indigenous Data Alliance, “CARE Principles for Indigenous Data Governance”.

CHAPTER 17 AFRICA IS BIGGER THAN YOU THINK

1. The Africa–Greenland area comparison is deliberately rounded: authoritative area figures support the statement that Africa is roughly fourteen times Greenland’s area. Sources: United Nations, “UNData Africa regional profile”; Statistics Greenland, “Greenland in Figures 2026”.

2. Mercator enlarges scale increasingly with latitude; it does not apply a special shrinking operation to Africa. Mercator’s 1569 design was navigational. Sources: PROJ contributors, “Mercator - PROJ documentation”; Gerardus Mercator, “Nova et aucta orbis terrae descriptio ad usum navigantium emendate accomodata”.

3. The 1375 Catalan Atlas and the fifteenth-century Fra Mauro map are used as external evidence that substantial information about African polities, routes and trade circulated before nineteenth-century partition; they are not presented as internally African-authored maps. Sources: Bibliothèque nationale de France, “Atlas catalan, 1375: catalogue and contextual material”; Biblioteca Nazionale Marciana, “Il mappamondo di Fra Mauro”.

4. Recent scholarship on colonial cartography supports the point that European mapping depended on African guides, intermediaries, rulers and local geographic knowledge while imperial institutions controlled much of the printing, surveying and bureaucratic circulation. Sources: Lindsay Frederick Braun, “Cartography in Colonial Africa”.

5. The Berlin Conference remains important to imperial competition and the exclusion of African sovereignty. Source: Jack Paine; Xiaoyan Qiu; Joan Ricart-Huguet, “Endogenous Colonial Borders: Precolonial States and Geography in the Partition of Africa”.

6. Paine, Qiu and Ricart-Huguet analyse 107 bilateral colonial borders and show that precolonial political geography and African agency influenced many boundary outcomes. Source: Jack Paine; Xiaoyan Qiu; Joan Ricart-Huguet, “Endogenous Colonial Borders: Precolonial States and Geography in the Partition of Africa”.

7. OAU resolution AHG/Res.16(I), Cairo 1964, pledged respect for borders existing at independence. Sources: Organisation of African Unity, “AHG/Res.16(I) - Border Disputes Among African States”.

8. The Gall-Peters controversy involved an equal-area cylindrical projection associated with James Gall and later promoted by Arno Peters; political claims and technical properties should remain distinct. Sources: Dhananjayan Sriskandarajah, “Long Underwear on a Line? The Peters Projection and Thirty Years of Carto-controversy”; Jeremy W. Crampton, “Cartography’s Defining Moment: The Peters Projection Controversy, 1974–1990”.

9. Equal Earth was introduced in 2018 and EPSG:8857 existed before the 2026 campaign’s UN success. Sources: Bojan Šavrič; Tom Patterson; Bernhard Jenny, “The Equal Earth map projection”; EPSG / IOGP, “WGS 84 / Equal Earth Greenwich - EPSG:8857”.

10. Africa No Filter and Speak Up Africa launched Correct the Map in Dakar on 7 April 2025. Claims about subconscious, economic or political effects are campaign claims unless independently supported by cognition research. Sources: Africa No Filter; Speak Up Africa, “The Biggest Lie in Geography Is About Africa — And It’s Time to Correct It”.

11. Assembly/AU/Dec.959(XXXIX) adopted Equal Earth for the AU initiative, urged member states to revise curricula and established implementation machinery; the AU’s colonial, cognitive-justice and reparatory language remains attributed to the AU. Sources: African Union Assembly, “Decision on ‘Correcting the Map of Africa on the Globe’”.

12. Togo’s sponsorship and diplomatic role are documented in AU/Togolese records; interpretations about why the strategy was effective remain authorial analysis. Sources: Ministry of Foreign Affairs, Togo, “Correct The Map - Togo diplomacy project page”; Robert Dussey, “Briefing to African Group before UN consideration of Correct the Map”.

13. The UN vote and final resolution symbol are recorded in official United Nations sources. Sources: United Nations Meetings Coverage and Press Releases, “General Assembly Adopts ‘Correct the Map’ Resolution at 114th Plenary Meeting”; United Nations General Assembly, “Correct the map: rebalancing global cartographic representation and promoting equitable representation of the world’s regions, particularly Africa”.

14. Sources: Jack Paine; Xiaoyan Qiu; Joan Ricart-Huguet, “Endogenous Colonial Borders: Precolonial States and Geography in the Partition of Africa”; Organisation of African Unity, “AHG/Res.16(I) - Border Disputes Among African States”.

CHAPTER 18 GREENLAND IS BIG ENOUGH

1. Greenland covers a little over two million square kilometres. Sources: Statistics Greenland, “Greenland in Figures 2026”; United Nations, “UNData Africa regional profile”.

2. Donald Trump’s 4 January 2026 remarks are limited to source-supported statements that the United States needed Greenland for national security, that the island was strategically important, and that he invoked Russian and Chinese activity. Sources: Donald J. Trump / Office of the Federal Register, “DCPD-202600005 - Trump remarks on Greenland and Arctic security”.

3. Pituffik Space Base’s high-latitude location supports satellite-control, missile-warning and space-surveillance missions; U.S. Space Force material explains the value of repeated access to polar orbits. Sources: U.S. Space Force Combat Forces Command Public Affairs, “Satellite Control Network operations at Pituffik Space Base”; Staff Sgt. Jaime Sanchez, “Pituffik Space Base change of command and current mission”.

4. The Arctic-strategy context comes from current defence and NATO material; strategic importance is grounded in geography and policy. Sources: U.S. Department of Defense, “2024 Department of Defense Arctic Strategy”; NATO, “NATO Arctic security topic page”.

5. Greenland’s 2009 Self-Government Act recognises Greenlanders’ right of self-determination and establishes a process in which a decision on independence belongs to the people of Greenland. Source: Danish Government / Greenland, “Act on Greenland Self-Government”.

6. Greenlandic political statements place Greenlandic agency at the centre rather than framing the island solely as an object of U.S.–Danish competition. Sources: Jens-Frederik Nielsen; Pele Broberg; Múte B. Egede; Aleqa Hammond; Aqqalu C. Jerimiassen, “Greenland political-party leaders: We stand together as a people”; Jens-Frederik Nielsen, “Greenland Prime Minister Jens-Frederik Nielsen press conference remarks”; Mette Frederiksen, “Statement by Danish Prime Minister Mette Frederiksen on Greenland”.

7. Greenland’s mineral-resource discussion distinguishes geological or resource potential, licences and regulation from operating or profitable mines. Sources: Naalakkersuisut, “Greenland Mineral Resources Authority”; Ministry of Business and Minerals / Rambøll, “Greenland mining-industry sustainable energy report”.

CHAPTER 19 DOES A MAP CHANGE YOUR MIND?

1. Battersby and Montello’s 2009 study tested remembered area estimates and found little support for the simple latitude-driven Mercator effect predicted by popular claims. Sources: Sarah E. Battersby; Daniel R. Montello, “Area Estimation of World Regions and the Projection of the Global-Scale Cognitive Map”.

2. A 2019 Belgium/U.S. study of young people likewise did not find a simple Mercator-exposure signature dominating country/continent area estimates. Sources: Lieselot Lapon; Philippe De Maeyer; Nina Vanhaeren; Sarah Battersby; Kristien Ooms, “Evaluating Young People’s Area Estimation of Countries and Continents”.

3. The 2020 worldwide study gathered more than 130,000 responses; its filtered analytic sample was smaller. Sources: Lieselot Lapon; Kristien Ooms; Philippe De Maeyer, “The Influence of Map Projections on People’s Global-Scale Cognitive Map: A Worldwide Study”.

4. The 2020 results were more nuanced than a ‘Mercator imprints area memory’ slogan and included strong general magnitude-estimation effects. Sources: Lieselot Lapon; Kristien Ooms; Philippe De Maeyer, “The Influence of Map Projections on People’s Global-Scale Cognitive Map: A Worldwide Study”.

5. Montello and Battersby’s 2022 work again found little support for a remembered-area Mercator effect but found a much stronger directional pattern consistent with familiar rectangular-map geometry. Sources: Daniel R. Montello; Sarah E. Battersby, “Another Look at the “Mercator Effect” on Global-Scale Cognitive Maps: Not in Areas but in Directions”.

6. Research on projection cues shows that users can know projections distort while still relying on familiar shapes, graticules and other cues inconsistently. Sources: Sarah E. Battersby; Fritz C. Kessler, “Cues for Interpreting Distortion in Map Projections”.

7. The 2024 Greenland experiment found a conditional interaction between projection and verbal framing in a hypothetical U.S. purchase scenario; it does not establish that projection caused real-world U.S. policy. Sources: Adam S. Richards; Evan Cooley; Jalen Miller; Ronald Watterson, “Testing the Mercator Effect: Global Map Projections Persuade Differently According to the Emphasis Frames Used to Contextualize Them”.

8. Kessler and Battersby’s literature review was published online in 2023 and in the 2024 volume/issue; it describes a real but relatively sparse and methodologically uneven body of cognition/perception research on map projections. Sources: Fritz C. Kessler; Sarah E. Battersby, “Cognition and perception of map projections: a literature review”.

9. The cited studies distinguish immediate visual distortion, remembered area, directional judgement and projection-plus-framing effects as different psychological outcomes. Sources: Sarah E. Battersby; Daniel R. Montello, “Area Estimation of World Regions and the Projection of the Global-Scale Cognitive Map”; Daniel R. Montello; Sarah E. Battersby, “Another Look at the “Mercator Effect” on Global-Scale Cognitive Maps: Not in Areas but in Directions”; Adam S. Richards; Evan Cooley; Jalen Miller; Ronald Watterson, “Testing the Mercator Effect: Global Map Projections Persuade Differently According to the Emphasis Frames Used to Contextualize Them”; Fritz C. Kessler; Sarah E. Battersby, “Cognition and perception of map projections: a literature review”.

CHAPTER 20 DESIGNING A DIFFERENT WORLD MAP

1. Boston Public Schools’ 2017 introduction of Gall-Peters maps supplies the contemporary opening context for the design discussion. Sources: National Geographic Education, “A Whole New World in Boston Public Schools”; Bob Shaffer, “Boston Public Schools Gall-Peters introduction - contemporary local report”.

2. Gall-Peters is equal-area and therefore preserves relative area while producing conspicuous shape distortion; equal-area does not mean distortion-free. Sources: Dhananjayan Sriskandarajah, “Long Underwear on a Line? The Peters Projection and Thirty Years of Carto-controversy”; John P. Snyder, “Map Projections: A Working Manual”.

3. The Gall-Peters projection belongs to the Gall Orthographic/cylindrical equal-area tradition associated with James Gall and later promoted by Arno Peters; it must not be confused with the separate Gall Stereographic projection. Sources: Jeremy W. Crampton, “Cartography’s Defining Moment: The Peters Projection Controversy, 1974–1990”.

4. Arthur Robinson’s design is a compromise projection rather than equal-area or conformal. Sources: Esri, “Robinson projection - ArcGIS Pro documentation”; John P. Snyder, “Map Projections: A Working Manual”.

5. National Geographic used Robinson for its standard world maps from 1988. A Winkel Tripel world-map supplement appeared in April 1995; Kessler’s contemporary account records that favourable response contributed to a 1998 decision to use Winkel Tripel for National Geographic’s standard world maps. Sources: National Geographic Society, “Selecting a Map Projection”; Fritz C. Kessler, “A Visual Basic Algorithm for the Winkel Tripel Projection”.

6. Šavrič, Patterson and Jenny introduced Equal Earth in 2018 as an equal-area pseudocylindrical world projection inspired in visual character by compromise maps such as Robinson. Source: Bojan Šavrič; Tom Patterson; Bernhard Jenny, “The Equal Earth map projection”.

7. The EPSG dataset registers three WGS 84 Equal Earth orientations relevant here: Greenwich as EPSG:8857, Americas at 90 degrees west as EPSG:8858, and Asia-Pacific at 150 degrees east as EPSG:8859. Other central meridians require their own parameterisation. Sources: EPSG / IOGP, “WGS 84 / Equal Earth Greenwich - EPSG:8857”; EPSG / IOGP, “WGS 84 / Equal Earth Americas - EPSG:8858”; EPSG / IOGP, “WGS 84 / Equal Earth Asia-Pacific - EPSG:8859”; PROJ contributors, “Equal Earth - PROJ documentation”.

8. User-preference research finds meaningful differences in how readers respond aesthetically to world projections; preference is not the same as geometric accuracy. Source: Bojan Šavrič; Bernhard Jenny; Denis White; Daniel R. Strebe, “User preferences for world map projections”.

9. Modern software can support multiple projections or globe views, weakening the technical necessity for one universal flat default even though institutional and compatibility choices still matter. Sources: Mapbox, “Globe and Atmosphere - Mapbox GL JS”; Jennifer Wrightsell-Hughes, “Changing the map projection in ArcGIS Online”; MapLibre contributors, “MapLibre GL JS globe support and projection toggle”; Bernhard Jenny, “Adaptive Composite Map Projections”.

CHAPTER 21 THE WORLD, REDRAWN

1. Togo introduced the initiative for the African Group; 164 states voted in favour, the United States against, and Estonia, Georgia, Lithuania, Republic of Moldova, Serbia and Ukraine abstained. Source: United Nations Meetings Coverage and Press Releases, “General Assembly Adopts ‘Correct the Map’ Resolution at 114th Plenary Meeting”.

2. The formal UN action on 4 September 2026 is controlled by the 114th-plenary schedule, draft A/80/L.104, official meeting coverage and final A/RES/80/307 record. Sources: United Nations, “80th General Assembly schedule - 114th plenary meeting”; United Nations General Assembly, “A/80/L.104 - Correct the map”; United Nations Meetings Coverage and Press Releases, “General Assembly Adopts ‘Correct the Map’ Resolution at 114th Plenary Meeting”; United Nations General Assembly, “Correct the map: rebalancing global cartographic representation and promoting equitable representation of the world’s regions, particularly Africa”.

3. The interval from the 7 April 2025 campaign launch to the 4 September 2026 vote is about seventeen months. Sources: Africa No Filter; Speak Up Africa, “The Biggest Lie in Geography Is About Africa — And It’s Time to Correct It”; United Nations Meetings Coverage and Press Releases, “General Assembly Adopts ‘Correct the Map’ Resolution at 114th Plenary Meeting”.

4. Assembly/AU/Dec.959(XXXIX) in February 2026 adopted Equal Earth for the AU initiative and urged curriculum revision. Source: African Union Assembly, “Decision on ‘Correcting the Map of Africa on the Globe’”.

5. By June 2026 the African Union Commission had announced an interdepartmental working group and a continental implementation-roadmap process, with engagement aimed at technology, mapping, publishing and education sectors. Source: African Union Commission, “AU leaders adopt historic initiative to correct the Map of Africa, advancing implementation and global repositioning of the Continent”.

6. France’s 4 September 2026 foreign-ministry statement announced a move away from Mercator in diplomatic uses toward representations adapted to purpose and more faithful to area. Source: Ministère de l’Europe et des Affaires étrangères, France, “Cartographie : pourquoi dépasser la projection de Mercator ?”.

7. The resolution is political and institutional endorsement, not a technical act of inventing Equal Earth or registering EPSG:8857. Sources: Bojan Šavrič; Tom Patterson; Bernhard Jenny, “The Equal Earth map projection”; EPSG / IOGP, “WGS 84 / Equal Earth Greenwich - EPSG:8857”; United Nations General Assembly, “Correct the map: rebalancing global cartographic representation and promoting equitable representation of the world’s regions, particularly Africa”.

8. The chronology distinguishes projection invention, software implementation, EPSG registration, political endorsement and practical rollout. Sources: Bojan Šavrič; Tom Patterson; Bernhard Jenny, “The Equal Earth map projection”; EPSG / IOGP, “WGS 84 / Equal Earth Greenwich - EPSG:8857”; African Union Assembly, “Decision on ‘Correcting the Map of Africa on the Globe’”; United Nations General Assembly, “Correct the map: rebalancing global cartographic representation and promoting equitable representation of the world’s regions, particularly Africa”.

9. Major platform documentation current through 6 September 2026 continued to describe existing Web Mercator and globe-based mapping infrastructure. Sources: Google, “Map and Tile Coordinates - Maps JavaScript API”; Mapbox, “Globe and Atmosphere - Mapbox GL JS”; Jennifer Wrightsell-Hughes, “Changing the map projection in ArcGIS Online”; Apple, “Apple Maps - Interactive Globe”.

10. The AUC’s post-vote response called for progressive uptake. Source: African Union Commission, “Communiqué of the Chairperson on the adoption of the Correct the Map resolution”.

EPILOGUE

CHOOSE YOUR DISTORTION

1. The epilogue restates the book’s central cartographic principle: every flat projection preserves some properties and distorts others; the relevant standard is fitness for purpose rather than the absence of distortion. Sources: John P. Snyder, “Map Projections: A Working Manual”; Michael T. Gastner; Krisztián Kerkovits, “Choosing World Map Projections: When Equal-Area Is Appropriate (and Why There Is No Single “Correct” Projection)”.

2. Equal-area, conformal, distance/direction-preserving and compromise properties are technical choices suited to different tasks, not a hierarchy of moral correctness. Sources: John P. Snyder, “Map Projections: A Working Manual”; Miljenko Lapaine; E. Lynn Usery, editors, “Choosing a Map Projection”.

3. Modern globe and multi-projection software demonstrates that digital mapping need not use one flat projection for every scale and task. Sources: Mapbox, “Globe and Atmosphere - Mapbox GL JS”; MapLibre contributors, “MapLibre GL JS globe support and projection toggle”; Bernhard Jenny, “Adaptive Composite Map Projections”.

4. The centre and seam of a world map are design choices distinct from the prime meridian and from the International Date Line. Sources: PROJ contributors, “Cartographic projection - PROJ longitude wrapping and prime meridian documentation”; U.S. Naval Observatory, “The International Date Line”.