The name Colorado comes from the Spanish for "reddish" or "ruddy." The state got its name from the Rio Colorado (Colorado River), which was named for the red-colored earth in the area.
Colorado lies in the western part of the United States in the Rocky Mountain region. The U.S. obtained the state at the end of the Mexican-American War in 1848 as part of the Treaty of Guadalupe Hidalgo. It became the 38th state in the nation on August 1, 1876. Denver is the capital city. Colorado's state motto is "Nil Sine Numine" or "Nothing without the Deity." The state tree is the Colorado Blue Spruce, and the state flower is the white and lavender Columbine.
In 1972, Colorado rejected the International Olympic Committee's invitation to host the 1976 Winter Olympics in Denver. Voters opposed using state taxes to finance the games. Innsbruck, Austria, hosted the games that year.