Colorado, "The Centennial State" was admitted to the Union in this year
The Centennial State first joined the union on Aug. [DOC] [TLE] About Colorado | Democratic Senate Campaign Fund [PAR] Colorado is nicknamed the "Centennial State" because it was admitted to the 
Union in 1876, the centennial year of the United States Declaration of... [DOC] [TLE] Colorado Admitted to the union 100 years from the founding of the ... [PAR] Union, Colorado quickly became known as The Centennial.