It's the summer of 1776 in Philadelphia. A big decision is being made inside Independence Hall. Read the clues, then crack all four locks to find out what happened — using only what the clues actually prove.
In 1776, leaders from the thirteen colonies met in Independence Hall. They wrote a famous document explaining why the colonies wanted to be free from Britain. Open each clue, then solve the locks. Remember: a careful thinker only claims what the clues actually show.
Tap each clue to read it. (You can reopen them anytime.)
Solve each lock using the clues above.
You pieced together the story of 1776 using only what the clues proved — no wild guesses. That's exactly how careful thinkers study history.