section_path: History by region/Americas/Mesoamerica
section_name: Mesoamerica
paragraph_text: Mesoamerica
  
  Agricultural cultivation began around 8000 BC in Mesoamerica, where avocados, beans, chili peppers, gourds, and squashes were grown from about 7000 BC. Around 4000 BC maize began to be grown, and soon after this tomatoes. Settlements appeared around 3000 BC and by 2000 BC most of Mesoamerica was practicing agriculture. Although some animals were domesticated — notably turkeys and dogs — the lack of suitable large animals precluded the development of animals used for transportation or labour.
  
  Around 1200 BC the first Olmec center of San Lorenzo was founded, which remained the centre of Olmec civilisation until around 800 BC when La Venta took over before losing primacy to Tres Zapotes around 400 BC. These and other Olmec centres were groups of tombs, temples, and other ceremonial sites built of stone. Their construction testifies to the complexity of Olmec society, although the exact nature of how they were governed is not known. They also erected large stone sculptures of human heads and other subjects. Jade jewelry and other Olmec objects are found throughout Mesoamerica, likely having travelled via trade networks. The Olmec writing system was mainly used for recording their calendar, both of which influenced later Mesoamerican cultures.
  
  After the decline of the Olmecs, other civilisations in Mesoamerica either arose or emerged from the Olmec shadow - the Mayans, the Zapotecs, and Teotihuacan. The Zapotecs began around 500 BC in the Oaxaca Valley at the site of Monte Alban. Monte Alban grew to around 25,000 residents in the period around AD 200, with the city having large stone temples and an expansive stone plaza. Like the Olmecs, they had a writing system and calendar. But by AD 900 Monte Alban was deserted for unknown reasons. Teotihuacan developed around AD 200 and centred on the city of Teotihuacan, which grew to perhaps as many as 200,000 inhabitants at its height. Teotihuacan lasted until around AD 700, when it was burned and vandalized.
  
  Maya culture began to emerge around AD 300 in the Yucatan Peninsula and modern-day Guatemala. During the 600 years of the Classical Maya period, more than 80 Mayan sites were built, with temples, pyramids, and palaces the focal point of each centre. The most influential was Tikal, but Mayan civilisation was based on city-states which often were at war with each other. This seems not to have restricted trade, which went on between the cities. A priestly elite kept astronomical and calendrical knowledge, recording it with a writing system based on the Olmec system of glyphs. History, poetry, and other records were recorded in books, most of which did not survive the Spanish conquest of Mesoamerica. Mathematics was also studied, and they used the concept of zero in their calculations. The Mayan civilisation began to decline about AD 800, and most of its cities were deserted soon afterwards.