The Inter-Tribal Council of the Five Civilized Tribes (ITC) is an organization that unites the tribal governments of the Cherokee, Chickasaw, Choctaw, Muscogee and Seminole Nations. Together these tri …The Inter-Tribal Council of the Five Civilized Tribes (ITC) is an organization that unites the tribal governments of the Cherokee, Chickasaw, Choctaw, Muscogee and Seminole Nations. Together these tri …