What process did Arizona undergo to become a part of the United States?

The process that Arizona underwent to become a part of the United States was the statehood admission process. Following its territorial status, Arizona sought to gain entry into the Union as a state. This involved a series of steps that included meeting certain requirements set by Congress, drafting a state constitution, and gaining approval from the residents of Arizona through a referendum.

Arizona was originally part of the New Mexico territory and, after the Gadsden Purchase in 1854, began its journey towards statehood. It was not until 1912 that Arizona officially became the 48th state of the United States. This process is significant because it demonstrates how territories in the U.S. were transformed into states, emphasizing the importance of governance and representation for new states within the federal system. The statehood admission process is a vital aspect of the U.S. constitutional framework that allows territories to gain state status through legislative action and popular consent.