This is a tricky one but it should be .
A, They worried that Lincoln would try to end slavery in the United States.
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.
Upon research, it seems it was George Washington who visited the swamp.
