Why did Missouri's request to join the United States in 1820 cause a crisis? A. Northern states were upset that Missouri wanted to join as a slave
state.
B. Northern states did not want to accept the Fugitive Slave Act.
C. Southern states worried they would lose power in Congress if
Missouri became a state.
D. Southern states were upset that Missouri wanted to join as a free
state.

A

Explanation:

A

Explanation:

Missouri is infamous for trying to join the Union as a slave state, even though slavery was prohibited (banned) within the Union, which were free states.

This led into the Missouri Compromise, where Missouri was eventually admitted as a slave state in exchange for legislation that banned slavery above 36°30' parallel, except for Missouri.

the emancipation proclamation was the aim of the war change to include the freeing of slaves in addition to preserving the union. the 13th amendment, which abolished slavery in the u.s. was passed on december 6th 1865.

as promised, lincoln waited to unveil the proclamation until he could do so with success from the union military advance. on september 22nd 1862, after a victory at antietam, he publicly announced a preliminary emancipation proclamation, declaring all slaves free in the rebellious states as of january 1st 1863.