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.