No. They did not become states until decades after slavery ended in the US Civil War.
However..
When statehood was first proposed for the New Mexico Territory in 1850, slavery would have been prohibited there. In 1860, Northern Republicans were anxious to avoid Southern secession, and offered to admit New Mexico as a slave state. But it was too little, too late. New Mexico did not finally become a state until 1912, and was the 47th US state.
No, New Mexico entered the Union after the Civil war ended
It would have to enter as a slave state. And they didn't want a war with Texas and Mexico.
In 1792
No Mexico was never part of the Union, Texas which gained independence from Mexico was a slave state and got annexed in the US together with a free state to create equality in congress.
Oregon entered as a Free State.
maine and missouri missouri would enter the union as a slave state maine would enter the union as a free state kept the balance between free and slave states equal
The compromise of 1820 allowed the state of Missouri to enter the Union as a slave state in exhange for Maine entering as a free state. The compromise also stated that any state west of the Mississippi River would enter as a free state.
NM became a state on January 6, 1912 and was the 47th state to enter the union.
Missouri was admitted as a slave state. This was part of the Missouri compromise in which Missouri would enter as a slave state and Maine as a free state.
No. The Missouri Compromise allowed Missouri to enter the Union as a slave-state, on condition that there would be no more slave-states North of the parallel that marked Missouri's Southern border.
It would create a new slave state north of the accepted dividing line
The Missouri Compromise of 1820 allowed Maine to be admitted to the Union as a slave state. This was to counter balance having Missouri enter the Union as a slave state. The Missouri Compromise of 1820 allowed Maine to enter the US as a free state and allow Missouri to enter 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.