| Date |
Event |
| 1150 |
The Hopi village Oraibi is established. It is the oldest continuously inhabited city in the U.S. |
| 1539 |
Spanish priest Marcos de Niza is the first European to arrive in Arizona. |
| 1775 |
The city of Tucson is established |
| 1848 |
The United States acquires much of Arizona in the Treaty of Guadalupe Hidalgo. |
| 1863 |
The Arizona territory is established |
| 1889 |
Phoenix becomes the capital city. |
| 1912 |
Arizona becomes the 48th state of the United States |
| 1919 |
The Grand Canyon National Park is established. |
