C. the closing of the First Bank of the United States
Answer: Wanted to expand westward but were not allowed to.
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They created the office of the Plebeian Tribune.
The effect of john brown leading attacks on harpers ferry is federal troops begin capturing southern territories.
<h3>Who was Harpers Ferry?</h3>
John Brown attacked harpers ferry hoping to capture the arsenal and start a slave rebellion in the south.
Federal troops begin capturing southern territories was the major effect of john brown leading attacks on harpers ferry.
Therefore, D is the correct option.
Learn more about Harpers Ferry here:
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