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Started at the 10 000 B.C. and ended at 4 000 B.C.

This is attributed to the end of the Ice Age

The disappearance of big animals, such as the mammoth.

This period is an interesting time of improving environmental conditions, resulting in a rich environment for humans to live in.

Native American populations increased at least five-fold over Paleoindian times.

The materias that they used to make tools were the stone.

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It was discovered by Helmut de Terra. It is a skeleton that, believed at first to be 10 000 years old, because it was discovered near a mammoth of that age. Then, it was revealed that the bones were only 2 000 years old. In a curious note, after some investigations, scientifics concluded that Tepexpan man was not a man, but a woman.

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This era started (approximately) from the 2500 b.C to the 200 a.C.

The agriculture was settled, but through time was diverse and wide.

They started the production of pottery.

They started creating villages.

Those villages later became towns.

The labor was divided.

The trade and commerce emerges.

A complex religious system started.

The production of textiles.

Commerce and trades emerge.

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Developed before 1 200 B.C. and ended around 400 B.C.

The Olmecs did, however, codify and record their gods and religious practices using symbols.

Were very organized and planned their cities in order to create balance and proportion.

It was in La Venta were the very first pyramid from Mesoamerica was constructed.

The most important animals were the jaguar, eagles, snakes and caimans.

Archaeologist Peter Joralemon identified eight different kind of gods in the Olmec civilization: the Olmec Dragon, the Bird Monster, the Fish Monster, the Banded-eye God, the Maize God, the Water God, the were-Jaguar and the Feathered Serpent.

The art of the Olmec culture is one of the most important from the Precolumbian period, the most known works are the colossal stone heads.

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This era started in 200 a.C.

The increase and introduction of new agricultural techniques.

The density in population increased.

Ceremonial centers emerged.

Developments with the trades, consequent forms of cultural contact with other regions and their people.

New structures were created (social, economic, politics, religious).

Development of art.

The creation of calendrical systems.

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They perfected mathematics, astronomy, architecture and the visual arts and also refined and perfected the calendar.
Mayans also created a very specific and concrete mathematic system that allowed people to trade and commerce. Their system consisted in three symbols: a shell that represented the zero, a dot that represented the one and a line or a bar that represented five.

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Between the year 900 and the conquest.

Military activity became important.

Political etiles.

Group of warriors.

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During the Postclassic Era flourished the Aztecs, also called Mexicas. According to the legend, they emigrated in order to find a place to live. Near the Lake Texcoco, they found an eagle eating a snake, as portrayed in the coat of arms of Mexico. They founded here one of the largest cities in the world at the time: Tenochtitlan.