The Aztecs lived in central Mexico, building structures like dams and aqueducts to manage their environment of swamps and mountains. Their arts reflected their religious beliefs and were highly skilled. Aztec society was ruled by an emperor from the capital but local nobles had significant autonomy. Their laws were strict and punishments could include death. The Aztec religion centered on gods like Huitzilopochtli and required human sacrifice to nourish the gods. Prophecies held that Hernan Cortes might be the returning god Quetzalcoatl and the afterlife involved a journey through the underworld.