Aztec civilization

The center of the Aztec civilization was the Valley of Mexico, a huge, oval basin about 7,500 feet above sea level. The Aztec empire included many cities and towns, especially in the Valley of Mexico. The largest city in the empire was the capital, Tenochtitlan. The early settlers built log rafts, then covered them with mud and planted seeds to create roots and develop more solid land for building homes in this marshy land. Canals were also cut out through the marsh, so that a typical Aztec home had its back to a canal, with a canoe tied at the door.