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The Inca live in and around the city-state of Cuzco. During this period of time, they do not try to expand their area of control.
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Pachacuti Inca Yupanqui becomes the leader of the Inca. He begins to conquer nearby tribes and expand the control of the Inca Empire. He reorganizes the government into the Tawantinsuyu and builds the city of Machu Picchu.
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Huayna Capac, Tupac's son, becomes emperor. The Inca Empire will reach its peak under the reign of Huayna Capac.
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Emperor Huayna Capac dies from a plague. This was likely smallpox brought by the Spanish conquistadors. A large portion of the Inca population will die from smallpox and other diseases over the next several years.
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The sons of Emperor Huayna, Atahualpa, and Huascar fight over the crown. The Inca Empire fights a civil war for the next five years.
