Olmec culture developed in the Preclassic of Mesoamerica. Although there are indications of this culture in several places in Mesoamerica, the Olmec cultural area is considered to cover the southeastern part of the state of Veracruz and western Tabasco.
The Inca empire, which occupied a vast territory of South America, comprising the current or parts of the territories of the Republics of Peru, Ecuador, western Bolivia, northern Argentina, northern Chile and the southwestern tip of Colombia in the border.
The Mayan culture covered between 325,000 to 400,000 square kilometers of territory with the limit of the Gulf of Mexico and the Antilles Sea. Which is composed of the states of Campeche, Tabasco, Yucatán, Quintana Roo and Chiapas in the Mexican Republic; Guatemala, El Salvador, Honduras and Belize.
The Aztecs established Mexico Tenochtitlan in the center of the Valley of Mexico, expanding their control to city-states located in the current states of Mexico, Veracruz, Puebla, Oaxaca, Guerrero, the coast of Chiapas, the State of Hidalgo, and part of Guatemala. The territory that was conquered was not of a monotonous climate, but it covered climates as varied as the high mountain polar climate to warm climates. There was a great variety of ecosystems from coniferous, mixed, deciduous forests to warm ecosystems such as rain forests, rocky deserts, deciduous forests, mangroves, tropical forests, among other ecosystems.
Leaving fields unplanted allowed soil to recover from cash crops production, but <span>it was impossible for poor farmers who needed the money from the sale of their crops </span>
