Colorado. A state of the west-central United States. It was admitted as the 38th state in 1876. First explored by the Spanish in the 16th and 17th centuries, the region was added to the United States through the Louisiana Purchase (1803) and a cession by Mexico (1848). The Colorado Territory was organized in 1861. Denver is the capital and the largest city. Population: 5,024,748 as of July 2009
State Flower: Rocky Mountain Columbine - State Motto: Nothing Without Providence - State Nickname: Centennial State - State Bird: Lark Bunting
