What constitutional principle did the supreme court establish in the mcculloch case

The Supreme Court Case McCulloch v. Maryland (1819) was a monumental Supreme Court decision in that it established the principles in constitutional law of implied powers, and that state actions cannot impede valid constitutional exercises by the Federal government. This means that powers that were not explicitly listed in the Constitution are still constitutional if the Federal government creates laws that help to carry out the constitution in this case running a federal bank in the state of Maryland. The next important power was that the State of Maryland could not interfere or impede the powers of the Federal government to implement the Constitution. 

Ibelieve the answer is  battle of saratoga but i could be wrong