Answer:
I took the test, the answer is "Slavery in territories acquired (gained) from Mexico"
Explanation:
I believe its B as 'progressive' means <span>favoring or advocating </span>progress, change, improvement, or reform, as opposed to wishing to maintain things as they are, especially in political matters:<span>
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<span>The public ignored their rulings and their regulations. It was hard for everyone to agree on any one course of action.
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