Navajo, Apache, Hopi, Pima, Maricopa—inhabited region for millennia.
Francisco Vásquez de Coronado (16th century); founded Tucson (oldest continuously inhabited city in AZ).
Mexico gained independence (1821); U.S. acquired via Treaty of Guadalupe Hidalgo (1848). Gold rushes (1860s–70s) brought American settlers.
Miners, railroad builders, merchants; established communities in Phoenix, Tucson.