The Aztecs were known for their agricultural influence in farming. They mostly grew crops such as corn, and their diet was dominated by fruits and vegetables.
Connecting past and present helps you see how humans have chosen to deal with conflict, which can lead to war, political debate, neighborhood riots, discrimination, etc. But also linking past and present helps us see how humans have solved any problems they have come across. Whether it be an economic issue, something that effects many people, or a personal issue.
Worshipping Gods led to the sacrifice of animals to gain favor and power of the priests.
So they could mainstain a stronger colonie and become a better empire