Colorado became the 38th state of the United States on August 1, 1876. On that day, U.S. President Ulysses S. Grant signed Proclamation No. 230, allowing Colorado to join the Union as the 38th state. This happened a century after the founding fathers signed the Declaration of Independence, hence the name Centennial State.
The state’s motto is “Nothing without providence,” or “Nothing without the Deity” (Nil sine numine).