The document summarizes key events and developments related to the settlement of the American West between 1870-1890, including the frontier thesis, slaughter of the buffalo, Indian reservation policy, the Battle of Little Bighorn, Dawes Severalty Act, Ghost Dance Movement, and Wounded Knee Massacre. It also mentions topics like mining, lumbering, irrigation laws, homestead acts, ranching, and innovations in agriculture that transformed the Western frontier during this period.