Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.
The Arapahoe were almost permanent allies with hundreds of years of friendly relations. The Sioux were relative newcomers and their alliance was tentative and one directional (against white encriachment.) The Sioux did provide a major force when joined with the Cheyenne and Arapahoe as George Armstrong Custer discovered.
