Maine became a state on March 15, 1820. It was formerly part of the state of Massachusetts but succeeded with the approval of the General Court.
Maine was admitted into the Union on March 19, 1820 becoming the 23rd state to join the Union.
None, Maine was the only state to join the union in 1820.
Maine entered the union on March 15, 1820. Missouri entered the union on August 10, 1821, or 513 days later.
It entered the Union as a result of the Missouri Compromise.
maine entered the union as a slave state
Maine entered the union as a free state. Under the Missouri Compromise of 1820 Missouri was admitted as a slave state and Maine as a free state.
Maine is the 23rd state to be entered into the union, which happened in 1820. It is the northernmost state on the East coast.
1820
on 10 December 1817
On 14 December 1819.
Under the provisions of the Missouri Compromise, Maine was the state that entered the Union with Missouri.
Missouri entered the union as a slave state, Maine entered the union as a free state, it was compromised that there would be no more slave states above the 36th parallel(Missouri was to be the only exception)