Colorado, "The Centennial State" was admitted to the Union in this year
It's called "
The Centennial State" because it was admitted to the Union in 1876, the year... [DOC] [TLE] Colorado is The Centennial State... - The Blue Book: A Directory of ... [PAR] Colorado is The Centennial State (admitted to the Union 100 years after the 
signing of the Declaration of Independence) and its official motto -- made... [DOC] [TLE] American State Nicknames - Mike Todd [PAR] Admitted to the union 100 years from the founding of the Union, Colorado quickly 
became known as The Centennial State.