Why was Andrew Jackson's handling of the Indian Removal Act an attack on checks and balances?

Each town had a council, usually made up of a religious leader and elders. The council discussed important matters such as going to war against an enemy tribe. The council members and people of the town debated an issue until they agreed on what to do.  Traditionally, no tribal government or chief held authority over all the Cherokees. But in 1721, South Carolina colonists succeeded in persuading the Cherokees to choose a principal chief for the entire tribe to negotiate selling some of its hunting grounds.

Why did Jackson support the Indian Removal Act?

Jackson urged Indians to assimilate and obey state laws. Further, he believed that he could only accommodate the desire for Indian self-rule in federal territories, which required resettlement west of the Mississippi River on federal lands.

What were the effects of the Indian Removal Act?

Intrusions of land-hungry settlers, treaties with the U.S., and the Indian Removal Act (1830) resulted in the forced removal and migration of many eastern Indian nations to lands west of the Mississippi.

they died because of a disease during the first spanish colonies.