Which states are consistently included in the region where the Cayuse War took place?
Northwestern United States The Northwestern United States is an informal geographic region of the United States. The region consistently includes the states of Oregon, Washington, and Idaho—and usually Montana and Wyoming. Some sources include southeast Alaska in the Northwest. The related but distinct term "Pacific Northwest" generally excludes areas from the Rockies eastward.
Wabash Confederacy The Wabash Confederacy, also referred to as the Wabash Indians or the Wabash tribes, was a number of 18th century Native American villagers in the area of the Wabash River in what are now the U.S. states of Illinois, Indiana, and Ohio. The Wabash Indians were primarily Weas and Piankashaws, but also included Kickapoos, Mascoutens, and others. In that time and place, Native American tribes were not political units, and the villages along the Wabash were multi-tribal settlements with no centralized government. The confederacy, then, was a loose alliance of influential village leaders (sometimes called headmen or chiefs).