Who fought in the French and Indian War? Who discovered America?
Who were the smartest presidents (with the highest IQ’s)? Click for detailed answers on the Readers Digest site. These are subjective judgments of course. Many didn’t take IQ tests. Short version: John Quincy Adams. Thomas Jefferson. James Madison. John F. Kennedy. Bill Clinton. Jimmy Carter. Woodrow Wilson. John Adams. Teddy Roosevelt. James Garfield. Chester Arthur. Franklin Delano Roosevelt. Abraham Lincoln.