New Mexico became a state on January 6, 1912, and Arizona joined the union on February 14, 1912, almost exactly 100 years before the typing of this answer.
After the addition of Arizona, the United States went almost 47 years without a new state joining the union (until Alaska statehood in 1958), a record that stood until the summer of 2006 when the same amount of time had passed since Hawaii statehood. July 4, 2010 marked the first time that the U.S. used the same flag design for at least 50 years.
Febuary 14, 1912. So valentines day and it was the 48th state to join the US.
In 1848 as a result of the Treaty of Guadalupe Hidalgo.
Arizona was admitted into the Union on February 14, 1912 becoming the 48th state to join the Union.
Utah, Colorado, Arizona, and New Mexico are the states whose corners join together.
The Zimmermann telegram was actually intercepted and decoded by the British, then given to the US. In it Mexico was promised the return of Texas, Arizona and New Mexico if they would join Germany.
California, New Mexico, Texas, and Arizona
None. Presently, no US state wishes to join Mexico.There were however, several states that used to belong to Mexico and now are part of the US. Some examples include California, Arizona, New Mexico and Texas. See the related questions section for more details.
Arizona is physically located in the southwestern US.
By an act of the US Congress.
Mexico.
Mexico is the country located directly south of the United States. It shares a border that spans over 1,900 miles.
Phoenix, Arizona is in the south western part of the US. It borders Mexico, New Mexico, California, and Nevada, and Utah
Arizona, New Mexico, Utah, and Colorado
new Mexico
California, Arizona, New Mexico and Texas.