The weird thing about the Mesoamerica civilization is that the Aztec civilization was the last great civilization in Mesoamaerica. They grew maize, beans,and other crops. They constructed monuments, ceremonial centers. Aztecs based their economy on farming. They built a great empire. They were astronomers, mathematics, priest and farmers. But the most important thing about the Mesamerica civilization is that the Aztecs civilization was the last great civilization in Mesoamerica.