Presidential Firsts

Which President, the seventh POTUS and star of the America twenty-dollar bill, was the first US President to kill someone in a duel?

President Washington and President Adams, presumably germaphobes, bowed at White House guests to avoid physical contact. Which President, USA's third, was the first to greet guests with a handshake?

What was the name of the U.S. President, son of former President John Adams, who was the first to identify as an abolitionist?

What was the name of the 8th U.S. President who was the first to be born in the United States of America?

Now a White House tradition, which honest President was the first to "pardon a turkey"?

After William Henry Harrison died in office, which US President, a believer in manifest destiny, became the first Vice President to take office due to a death?

Which US President, the 15th, would have been the first President who could have starred on "The Bachelor," remaining single while in the White House?

Serving as President from 1881–1885 and ranked as one of the worst presidents in American history, who was the first US President to be accused of being born outside of the United States?