Final answer:
The federal government established a district court in Indian territory to control frontier violence, settle western lands peacefully, and promote the territorial integrity of the United States.
Step-by-step explanation:
The federal government established a district court in Indian territory to control frontier violence, settle western lands peacefully, and promote the territorial integrity of the United States. By establishing a district court, the government sought to enforce laws and regulations that would protect both Native Americans and white settlers. The court was responsible for handling cases related to trade, land disputes, and treaty violations, among other issues.
Thus, the establishment of a district court in Indian Territory occurred as part of the federal government's efforts in the 19th century. This legal institution aimed to administer justice, address legal matters, and manage the evolving relationship between the United States government and the indigenous peoples in the designated territory.