Several of our Founding Fathers were barely out of their teens when the Declaration of Independence was signed, according to the Journal of the American Revolution. Some of them were still teenagers, actually:

Marquis de Lafayette, 18
James Monroe, 18
Gilbert Stuart, 20
Aaron Burr, 20
Alexander Hamilton, 21
Betsy Ross, 24
James Madison, 25

This sort of puts General Cornwallis‘ surrender at Yorktown in 1781 into a new perspective, doesn’t it? (Cornwallis was 42 years old at the time.)

“And I would have gotten away with it, too, if it weren’t for you meddling kids!” (Via tvtropes.org)