Answer:
Purchased the Louisiana Territory.
Explanation:
Jefferson's most significant accomplishment as president was the Louisiana Purchase. In 1803, he acquired land stretching from the Mississippi River to the Rocky Mountains from cash-strapped Napoleonic France for the bargain price of $15 million, thereby doubling the size of the nation in a single stroke.
The best answer is <span>b) marble cake federalism.
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Explanation:
produce loyal citizens who contributed to the economy.