MAPS OF HISTORY · NORSE AND AZTECS · MAPS BY YEAR · 1325Climate and Innovation: The Norse and the Aztecs, c. 790–1521 · THE MAP IN 1325
Map of the Basin of Mexico in 1325
Tenochtitlan founded on an island of the lake
The Basin of Mexico in 1325: Tenochtitlan founded on an island of the lake. Since 1150, 2 territories changed status on this map: Tenochtitlan and The Tepanec lands (Azcapotzalco, Tlacopan, Coyoacán).
1325 · CLIMATE AND INNOVATION: THE NORSE AND THE AZTECS, C. 790–1521 These maps are reconstructed from published sources · Natural Earth administrative references · Basin of Mexico, c.1519 — published lake and causeway map · Hanns Prem: Tenochtitlan and islands in Texcoco Lake, 2008 · Mexico Secretariat of Culture / INAH: Tlatelolco archaeological-site location · Cliopatria v0.2.1 historical polities · GeoNames geographic controls · Natural Earth v5.1.2 full geographic reference · Aztec tribute provinces, 1519 — published vector map · Rio Verde Archaeology: independent Tututepec
Source details Natural Earth contributors. Public domain Yavidaxiu, Historicair, Sémhur and named Commons contributors. CC BY-SA 4.0 · Registered source paths and island holes. The two coarsely drawn city holes are superseded by the locally registered Prem city plan; all other shorelines remain. Farm-islet groupings and lake subdivisions are documented derivatives, shared under CC BY-SA 4.0. Hanns Prem. Public domain dedication by the author (PD-self), worldwide reuse for any purpose · Observed city-shoreline and named causeway pixels registered locally to temple/Tacuba/Chapultepec references. No area rescaling. Pixel observations, controls, matrix and review are published. Mexico Secretariat of Culture / INAH: Tlatelolco archaeological-site location. Historical facts cited; no source artwork or prose reproduced Cliopatria contributors / Seshat Global History Databank. CC BY 4.0 GeoNames contributors. CC BY 4.0 Natural Earth contributors. Public domain Yavidaxiu, Ssolbergj, Keepscases and Sémhur. CC BY-SA 3.0 · Registered original province edges; grouped into teaching regions. Published derivative geography and processing records available with attribution. Rio Verde Archaeology: independent Tututepec. Historical facts cited; no source artwork or prose reproduced These maps are reconstructed from published sources. The layer record provides the source geometry, registration controls, reference dates and derivatives.
Lake shores and tribute-region edges are registered from two published 1519 maps. The detailed Prem city plan supplies the central island and its five connecting routes. Where a better downloadable map was unavailable, earlier chapters deliberately reuse these later-source geographic references.
The lake-map control RMS is 2.67 km, and the regional province-map control RMS is 14.79 km. The separate local city fit has a 61 m control RMS and a 330 m leave-one-out RMS. These figures diagnose the control fits; they do not prove the exact position of ancient shorelines. Region grouping, strategic-site margins and independent-state substitutions are documented.
Chinampa layers identify islets mapped by the source in the named agricultural districts. Their filled areas are not a cadastral inventory of every field.
proxy: Lower Río Verde / coastal Oaxaca geographic reference · proxy: Published geographic reference; not a medieval administrative survey · reconstruction: c.1519 named strategic locality · trace: Conquest-era city reference; Prem plan published 2008 · trace: c.1519 published reconstruction · vector: 1497–1520
Layer records and reconstruction methods
What changes on the map Tenochtitlan Other peoples and states → Tepanec empire of Azcapotzalco (to 1428) The Tepanec lands (Azcapotzalco, Tlacopan, Coyoacán) Other peoples and states → Tepanec empire of Azcapotzalco (to 1428)
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