a) Sitting Bull
Sitting Bull, a Native American leader, played a pivotal role at the Battle of Little Bighorn in 1876. As a chief and holy man of the Hunkpapa Lakota Sioux, he was a key figure in the resistance against U.S. government policies. His leadership and spiritual influence inspired his people to a significant victory against the U.S. Army, led by General Custer. Sitting Bull’s resistance became symbolic of the struggle for Native American rights and sovereignty during a time of aggressive American expansion.