Missouri joined the Union on 10 August 1821 as the 24th US State.
Missouri just joined the union as a slave state
Missouri was admitted into the Union on August 10, 1821 becoming the 24th state to join the Union.
Texas joined the union of states that comprise the United States. Texas was admitted into the Union on December 29, 1845 becoming the 28th state to join the Union.
Missouri was admitted into the Union on August 10, 1821 becoming the 24th state to join the Union.
It never joined the Confederacy. Lincoln was especially keen to keep Missouri onside, and allowed it to continue practising slavery for the time being. This much-divided 'border state' was plagued with inter-sectional combat throughout the war, but it did not actually secede.
No State joined the Union in 1880.
No State joined the Union in 1956.
Missouri would be admitted to the union as a slave state and Maine as a free state.
Missouri
None, Maine was the only state to join the union in 1820.
Indiana is the state that joined the union in 1816. The exact date that Indiana joined the union was on December 11th, 1816.