Final answer:
Thomas Jefferson succeeded in expanding the territory of the United States as president.
Step-by-step explanation:
As president, Thomas Jefferson succeeded in...
As president, Thomas Jefferson succeeded in expanding the territory of the United States. One of his most significant achievements was the Louisiana Purchase, in which the U.S. acquired vast lands from France, doubling its size. Jefferson also sent out the Lewis and Clark expedition to explore and map the new territories.
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