Answer: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.
Explanation:At the time, there were 22 states, half of them free states and half of them slave states. The Senate passed a bill allowing Maine to enter the Union as a free state and Missouri to be admitted without restrictions on slavery.
Through the process of elimination it would not be b or c because its is not an absolute location so its either a or d. Saying that I believe the answer would be d.
The answer is B.) Longites
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B. It was to aid Europe after WWII