They wanted a united nation. A bunch of individual state currencies would make trading, taxing and fining within the nation a pain.
B.
The Gibbons v. Odgen was a decision that ruled that Supreme Court could regulate interstate commerce.
Democracy became more popular. Another thing is after the French Revolution and the Reign of Terror Napoleon Bonaparte became first consul of France
It ruined most of their crops and most of the farmers left Georgia.
Hope this helped you:)