A span of 10 years is known as a (B) decade.
The main reason why the United States was so interested in the security of Latin America is because the Latin American countries were so close to the US, meaning that if they were invaded by European powers it would post a threat to the US.
The Missouri Compromise was an agreement made to keep the balance of slave and free states equal. Missouri was added as a slave state and Maine added as a free state in 1821.
Answer: A
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<span> The correct answer is commerce
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