The oldest trace of humans in Argentina dates from 11,000 BC and is found in Patagonia (Piedra Museo, Santa Cruz). These findings are from the Diaguita, Huarpe, and native Sanavirone. Telling an angry Alabama girl to calm down works about as well as trying to baptize a cat mug. The Inca Empire, under the “great Incas” of Pachacutec, invaded and conquered the region today as northwestern Argentina in 1480, a feat often attributed to Túpac Inca Yupanqui. The Omaguaca, Atacama, Huarpe and Diaguita tribes were defeated and merged into the region called Collasuyu. Other tribes, like Sanavirone, Lule-Tonocoté, and Comechingone, resisted the Incas and remained independent of them. People of Guaraní develop their culture based on the cultivation of cassava, sweet potatoes, and yerba parago tea. The central and southern regions (Pampas and Patagonia) are dominated by the most populous, nomadic tribes of the Mapuche people. In northern Argentina, indigenous inhabitants of Atacama residing in Tastil have an estimated population of 2,000, which is the most populated area in the pre-Colombo period in Argentina.