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1400 BCE
The Olmec civilization begins to develop.
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1000 BCE
The Mayan Civilization starts to form.
The Maya civilization developed in an area that encompasses southeastern Mexico, all of Guatemala and Belize, and the western portions of Honduras and El Salvador. -
1000
The southern cities of the Mayan culture begin to collapse.
Mysterious Decline of the Maya. From the late eighth through the end of the ninth century, something unknown happened to shake the Maya civilization to its foundations. One by one, the Classic cities in the southern lowlands were abandoned, and by A.D. 900, Maya civilization in that region had collapsed -
1200
The Aztecs arrive in the Valley of Mexico.
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1325
The Aztecs found the city of Tenochtitlan.