Question: what important events happened in arizona?
Answer: 1 A.D.: Hohokams development. ... , 1848: Mexican-American War ends. ... , 1863: Territory of Arizona is established. ... , 1853: Gadsden Purchase. ... , 1858: Large-scale mining begins. ... , 1868: Phoenix develops. ... , 1881: Gunfight at the O.K. Corral. ... , 1886: Geronimo surrenders.