USCIS Civics Question 87 asks the applicant to name one American Indian tribe. There is a long list of acceptable answers, and any one federally recognized tribe is correct.
Some well-known tribes: CHEROKEE (historically in the Southeast, forced to relocate via Trail of Tears 1838-1839; now primarily in Oklahoma and North Carolina); NAVAJO (largest reservation in the US, in the Southwest — Arizona, New Mexico, Utah); SIOUX / LAKOTA (Great Plains; famous battles including Little Bighorn 1876); CHIPPEWA / OJIBWE (Great Lakes region); APACHE (Southwest); IROQUOIS CONFEDERACY (Northeast — included Mohawk, Oneida, Onondaga, Cayuga, Seneca, and later Tuscarora; a sophisticated confederacy that some historians believe influenced American democratic structures); HOPI (Southwest, descendants of the Ancestral Puebloans); CHEROKEE were the most numerous tribe in the Southeast and had developed their own writing system (created by Sequoyah).
Historical context: American Indians were the original inhabitants of North America; European colonization beginning in the late 1400s and 1500s displaced, decimated, and dispossessed native populations through warfare, disease, forced displacement, and broken treaties; the Indian Removal Act (1830) under President Andrew Jackson forcibly relocated eastern tribes westward; today there are 574 federally recognized tribes, and American Indians are US citizens since the Indian Citizenship Act of 1924; tribal sovereignty allows tribes to govern themselves on reservations.