Which concept was developed when John Marshall was chief justice of the Supreme Court? representative government federalism separation of powers judicial review

## Step 1<br />John Marshall served as the Chief Justice of the Supreme Court from 1801 to 1835. During his tenure, he established several key principles that have shaped the American legal system.<br /><br />## Step 2<br />One of the most significant concepts that Marshall developed was the principle of judicial review. This principle asserts that the Supreme Court has the power to declare acts of Congress unconstitutional.<br /><br />## Step 3<br />This concept was established in the landmark case of Marbury v. Madison in 1803. This case set the precedent for the Supreme Court to interpret the Constitution and to declare acts of Congress unconstitutional.