The new party that formed was called the Constitutional Union Party. It was made out of former Whig members who teamed up with the know-nothing party former members in order to make a new party that would only look to the constitution as the only law that is important for the United States.
William M.Tweed was the leader of Tammany hall
True , because it stated that slavery was often referred and is recognized as the immediate cause of the civil war.