Me ayudarían a encontrar los cognados verdaderos, por favor.

This era takes up the two centuries prior to the Christian era approximately; during this era, the city grew up

enormously both in extension and in population, it maybe reached 50,000 inhabitants which was located in its

majority on the north and the west regions, varying in density. In this time other towns of the valley diminished in

population since its inhabitants moved to Teotihuacan where more and better attractions were offered.

In this period, the Calzada de los Muertos was designed in its north end, possibly the east and west avenues were

begun; the city was acquiring its definite shape, large avenues with a cross-like plan and the division in quadrants,

the definite north-south orientation is established with a deviation of 15´30´´ to the north east, remember the

orientation of the oldest planned city in Mesoamerica, La Venta with 8´ to the west of the north.

In this phase most of the city’s colossal buildings were built: the pyramid of the sun, which was amplified twice and

reached then its real height, and the interior building of the pyramid of the moon. The pyramid of the sun has almost

a square base of 222 m. by 225 m., formed of four sloped bodies with a total height of more than 63 m., Without

counting the temple that crowned it, now lost, formed by huge cross beams that do not end in a board, built almost

completely from clay, with the exterior covered with cut but not polished rock. There is an older construction, almost

of the same size in its interior, both of them built in this phase.

There are approximately twenty- three complexes of temples, built up three temples that enclose other sides of a

patio and a low platform limiting the fourth side of the patio that correspond to this era. It is possible that since this

phase certain irrigation projects were begun and new lands were cultivated; commerce was developed.

Teotihuacan begun importing green volcano-rock, since the local one was gray, from the Navajas mountain located

in Hidalgo. Taking into account the development that is reached in the different fields, it is believed that social

division existed with a predominant state and professionalization of activities, in other words, crafts were not made

as a hobby but rather as a primordial activity.

Teotihuacan reached great importance in the local market, center and source, with the temples. of the cities of

Mesoamerica.​