Answer :
Answer: A. The Missouri Compromise allowed the spread of slavery into some new U.S. territories but not into others
Explanation:
In an effort to preserve the balance of power in Congress between slave and free states, the Missouri Compromise was passed in 1820 admitting Missouri as a slave state and Maine as a free state.
Answer:
a.The Missouri Compromise allowed the spread of slavery into some new U.S. territories but not into others.
Explanation: