Before the arrival of the Spanish in 1519, the indigenous groups of the area were thriving. Specifically in the Valley of Mexico, the Teotihuacan, Toltecs, and Aztecs had risen to power at different points throughout history. In 1519, however, only the Aztecs were still active civilizations. The Aztec empire was conquered by the Spanish in 1521, and the city of Tenochtitlan was rebuilt and named Mexico City.|History.com Editors. “History of Mexico.” History.com. A&E Television Networks, November 9, 2009. https://www.history.com/topics/mexico/history-of-mexico.
