First, explain how religion contributed to the demise of the Aztecs. The Aztecs engaged in human sacrifices to please the gods. Often, they would kill people from neighboring city-states which created numerous enemies and wars for the Aztecs. This led to a decrease in population and led these enemies to assist the Spanish conquistadors. Have students take notes in their note catcher. Next, introduce Hernan Cortes and explain why he wanted to take over the Aztec empire. After this, students look at two images on the board and make observations about the Spanish conquistadors and the Aztecs. They may notice that the Spanish army’s weapons and armor, and the fact that the Aztecs are presenting them with gifts. After this, discuss Montezuma II and his flawed response to the Spanish invasion. Finally, discuss the role of disease. After conquering the Aztecs, Tenochtitlan was renamed “Mexico City’ and Cortes was made governor by King Charles I. Students will then watch a video and jot down any additional information they learned.