Part 1 of Essay
The center of the Aztec civilization was the Valley of Mexico, a huge, oval basin about 7,500 feet above sea level. The Aztecs were formed after the Toltec civilization occurred when hundreds of civilians came towards Lake Texcoco. In the swamplands there was only one piece of land to farm on and it was totally surrounded ....

Part 2 of Essay
.... by pilled up mud. On these chinapas Aztecs grew their food. The Aztec Empire included many cities and towns, especially in the Valley of Mexico. 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. In the early 1400s, Tenochtitlan joined with Texcoco and Tlacopan, two other majo ....