Benjamin Franklin (1706-1790) was one of the 'Founding Fathers' of the United States. He is also known as an entrepreneur, scientist. inventor, diplomat, activist and political theorist. Franklin is the only person to have signed all three of the Declaration of Independence, the US Constitution, and the Treaty of Paris (which brought an end to the Revolutionary War with Britain). Franklin is known for inventing the lightning road and bifocals. He was a prominent abolitionist in the second half of his life. Franklin's image appears on the $100 bill.