By discouraging students from practicing their tribal beliefs.
These schools were set up to erase Native American culture
I would rather eat a shark. I presume you were writing shark?
The Aztecs established an empire in what is now central Mexico. The Aztecs presided over one of the most relatively advanced cultures and economies in history.
Many members of the Senate, a group of appointed (not elected) political leaders, resented Caesar's popularity and arrogance. After Caesar attained the status of dictator for life in 44 B.C.E., these officials decided to strike the ultimate blow against his power.