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1100 CE
1110 CE
1120 CE
1130 CE
1140 CE
1150 CE
1160 CE
1170 CE
1180 CE
1190 CE
1200 CE
1210 CE
1220 CE
1230 CE
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1270 CE
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1290 CE
1300 CE
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1320 CE
1330 CE
1340 CE
1350 CE
1360 CE
1370 CE
1380 CE
1390 CE
1400 CE
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1460 CE
1470 CE
1480 CE
1490 CE
1500 CE
1510 CE
1520 CE
1100 CE - 1200 CE: The Valley of Mexico is first settled by migrating tribes (Chichimecs, Tepanecs, Mexica and Acolhua).
1345 CE - 1521 CE: The Aztec civilization flourishes in Mesoamerica.
1418 CE: Texcoco is temporarily conquered by Mexica and Tepanec forces.
1428 CE: The Triple Alliance is formed between Tenochtitlan, Texcoco and Tlacopan.
1431 CE: Netzahualcoyotl officially becomes tlatoani or leader of Texcoco.
1503 CE: The king of Texcoco, Netzahualpilli, participates in the coronation ceremony of the Aztec king Motecuhzoma II.
1520 CE: Ixtlilxochitl, with the support of Cortés, becomes king of Texcoco.
1520 CE: Hernán Cortés captures the city of Texcoco.
1521 CE: Texcoco provides ships and men to aide the Spanish siege of Tenochtitlan.