After their defeat in the War of 1812, the tribes were forced to sell all of their land claims to the U.S. federal government by the Treaty of Saginaw and the Treaty of Chicago. After the war, the government built forts in some of the northwest territory, such as at Sault Ste. Marie. In the 1820s, the U.S. government assigned Indian agents to work with the tribes, including arranging land cessions and relocation. They forced most of the Native Americans to relocate from Michigan to Indian reservations further west.