Arizona

1861, originally as the name of a breakaway Confederate region of southern New Mexico; later applied to a U.S. territory organized in 1863 roughly along the lines of the modern state and admitted in 1912. From Spanish Arizonac, which is probably from a local name among the O'odham (Piman) people meaning "having a little spring." An alternative theory is that it derives from Basque arizonak "good oaks."