Final answer:
The Indian Expedition fought with the North during the Civil War, with units like the 142nd Infantry showcasing valor in combat. Native American participation in American wars reflects a history of complex alliances and challenges, often influenced by the need to protect their lands.
Step-by-step explanation:
The Indian Expedition referred to a regiment of American Indians who were largely associated with the Union during the Civil War, so they were fighting with the North. Native American involvement in American wars has a complex history. Notably, during the American Revolutionary War, many tribes saw much at stake for their population and lands. While the Iroquois Confederacy declared neutrality, individual tribes made their own alliances, with many siding with the British. This was due to fears of American expansion and loss of land. In contrast, during World War I, the 142nd Infantry, consisting largely of Native Americans from separate units within the Oklahoma and Texas National Guard, displayed valor in combat alongside other American soldiers.