Why was a second Missouri Compromise necessary?

A) Maine's state constitution allowed slavery to continue until 1840.
B) Missouri's state constitution barred free blacks from entering the state.
C) Henry Clay refused to vote for the first Missouri Compromise.
D) Texas wished to enter the Union as a slave state at the same time.
E) Missouri's state constitution prohibited wage labor.

Missouri Compromise

The Missouri Compromise, enacted in 1820, was an agreement passed by the U.S. Congress to maintain the balance of power between slave and free states, admitting Missouri as a slave state and Maine as a free state.

Free Blacks

African Americans who were not enslaved before the abolition of slavery, living either by manumission, birth to free parents, or in regions where slavery was not enforced.

State Constitution

The fundamental legal document outlining the structure, functions, and principles of government within a specific state, subordinate to the federal constitution.