The Trail of Tears was the forced displacement and ethnic cleansing of about 60,000 Native Americans of the "Five Civilized Tribes", including their black slaves, between 1830 and 1850 by the United States government. As part of Indian removal, members of the Cherokee, Muscogee, Seminole, Chickasaw, and Choctaw nations were forcibly removed from their ancestral homelands in the Southeastern United States to newly designated Indian Territory west of the Mississippi River after the passage of the Indian Removal Act in 1830. The Cherokee removal in 1838 was the last forced removal east of the Mississippi and was brought on by the discovery of gold near Dahlonega, Georgia, in 1828, resulting in the Georgia Gold Rush.