USA HISTORY

Detailed explanation-1: -In retaliation for defeat at the Little Bighorn, Congress annexed the Black Hills from the Great Sioux Reservation on February 28, 1877. Essentially, these events marked the end of the Sioux Wars and the start of the reservation era.

Detailed explanation-2: -The Great Sioux War of 1876, also known as the Black Hills War, was a series of battles and negotiations which occurred in 1876 and 1877 between the Lakota Sioux, Northern Cheyenne, and the United States.

Detailed explanation-3: -The Sioux Wars were a series of conflicts between the United States and various bands of the Sioux people which occurred in the latter half of the 19th century. Sioux warriors assisted the British during the American Revolution as well as the War of 1812 and made their first treaty with the United States in 1815.