The document provides information about the Inca Empire, which originated in Peru in the mid-1400s under the leadership of Pachacuti. The Incas built a large empire stretching from Ecuador to Chile through conquest led by Pachacuti and subsequent rulers. The Incas established an organized society with tight control from Cuzco over conquered lands and an economy based on redistribution of goods produced through a labor tax. They developed impressive achievements in architecture, road networks, and farming but the empire fell in the 1520s during a civil war followed by conquest from Spanish forces led by Francisco Pizarro.