Thomas Jefferson wrote the declaration of Independence and had also sent the 2 great explorers Lewis and Clark to explore the Louisiana Purchase
He conquered Slavery and He bought the Louisiana Territory and he had to deal with Pirates in the North Atlantic sea.
he was the VP for john Adams and the first secratary of state and 3rd president
John Adams was the president then.
Yes thomas was a president. (he was the second president[U.S.A.])