How did the marshall court strengthen the national governement

States can usurp the authority of the federal government to regulate interstate commerce.

Explanation:

Marshall Court is nothing but Supreme court, popularly known after John Marshall who was the Fourth Chief Justice of American Nation. John Marshall died in the court itself serving as Chief Justice.

His time over the court has increased the judicial branches' power also the National government's power. In 1824 his court ruled a major order in the Gibbons v. Ogden. He orders that States can regulate interstate tradings with the help of the Fed Government.

This order literally strengthened the national government's power by increasing its role over the state. No one intended questions against the Government since the ruling actually provided the power to control it.

the correct answer is to reduce tax