Who was john Marshall and what was he famous for?

John Marshall was an American statesman and jurist who served as the Chief Justice of the United States from 1801 to 1835. He is renowned for establishing the principles of American constitutional law, particularly through landmark cases like Marbury v. Madison, which affirmed the power of judicial review. Marshall's tenure significantly shaped the role of the Supreme Court and strengthened the federal government. His decisions helped define the balance between state and federal authority in the United States.