The Americas contained many civilizations during the period from 900 to 1500AD. The Mayans, Aztecs and Incas thrived with cities, pyramids, religious ceremonies and rivalries. The Incas would create a large empire in South America with extensive roads to link the empire and a socialist government. Human sacrifices would be seen in the Mayan and Aztec civilizations. All would come to an end when the Spanish would enter the region, capturing the Aztecs and Inca civilizations.