Which major event during thomas jefferson’s presidency was most impactful

Thomas Jefferson was born on April 13, 1743, in Shadwell, Virginia. He was a draftsman of the U.S. Declaration of Independence; the nation's first secretary of state (1789-94); second vice president (1797-1801); and, as the third president (1801-09), the statesman responsible for the Louisiana Purchase.

South to get down 2 points