15th
Texas was the 28th state to join the US.
Iowa joined the Union as the 29th US State.
Tennessee was the 16th state to join the Union in June 1, 1796.
The last State to join the US was number 50, Hawaii. which joined the Union on 21 August 1959.
Hawaii
Missouri joined as a slave state and Maine joined as a free state.
No it joined the Union as the 15th US State.
Missouri joined the Union on 10 August 1821 as the 24th US State.
New Hampshire was the 9th state to join the Union. It joined on June 21, 1788.
1889
Hawaii 1959.
None. The US did not exist until 1776.