Why was the purchase of the Louisiana territory significant for Thomas Jefferson

President Jefferson's purchase of the Louisiana Territory doubled the size of the United States. The Constitution did give the president treaty-making power, so the United States Senate ratified the Louisiana Purchase into law as a treaty.

Explanation:

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answer; (d) none of the above;

the supreme court plays a big role in government. the constitution gives them ability to check the president and the congresses actions and dictate if their actions are allowed by the constitution or not.

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