The action by the state of Maryland which led to McCulloch v. Maryland was that it attempted to stop a branch of the Second Bank of the United States from bringing in notes that were not made in Maryland, as they were taxed if they were from out of state. This case led to the necessary and proper clause being used and is one of the most famous Supreme Court cases in the history of the United States.
Terrible, over half the people died. And so many deaths spread since it spread so quickly.
