Arizona is the 48th state and last of the contiguous states to be admitted to the Union, achieving statehood on February 14, 1912. Historically part of the territory of Alta California in New Spain, it became part of independent Mexico in 1821. After being defeated in the Mexican–American War, Mexico ceded much of this territory to the United States in 1848. The southernmost portion of the state was acquired in 1853 through the Gadsden Purchase.
New York was one of the original thirteen colonies that formed the United States. With an estimated 19.8 million residents in 2015, it is the fourth-most-populous state in the United States. To differentiate from its city with the same name, it is sometimes called New York State.