In the late spring of 1855, representatives from the major tribes of Washington Territory gathered in council at Walla Walla, where Chief Ka-Mi-Akin led the Confederacy of Tribes and Bands. The Yakima Treaty created a reservation of approximately 1,875 square miles of land, forests, streams, and lakes for the 14 original tribes or bands for “as long as the mountain stands and the river flows.” Isaac Stevens, military governor of the Washington Territory, assembled the council for the signing of the treaty between the 14 tribes and the federal government.