It allowed Missouri to be a slave state.
Benjamin Franklin's "Join or Die" cartoon was effective, in my opinion, as it drew on a popular belief at the time, about a sliced snake that would come revive if its parts were put together during the night; on the other hand, the symbolical image of the split and sliced America under foreign influence was widely intelligible. The initials of the states helped the viewer identify the parts. The message was clear - if those regions don't unite as soon as possible, they will stay dead forever.
Answer:
Correct answer is It was held in secret.
It originally met to write a whole new Constitution.
Explanation:
It was held in Pennsylvania State House, therefore it met in Philadelphia.
Only Rhode Island didn't sent its representative, therefore representatives of 12 states were present.
Of course, it was not held in secret as states had to choose their representatives before sending them.
Its purpose was not to write new Constitution, but to amend Articles of Confederation.
Benjamin Franklin helped to negotiate this treaty.