What main characteristic of the Supreme Court was emphasized by Chief Justice Marshall in Marbury v. Madison?

The emphasized characteristic of the Supreme Court in Marbury v. Madison is its power to interpret laws independently. Chief Justice John Marshall underscored the role of the Supreme Court as the final arbiter in determining the constitutionality of legislative and executive actions. The decision established the principle of judicial review, which allows the Court to invalidate laws and actions that it finds to be in conflict with the Constitution. This ruling was significant because it asserted the Court's authority as an independent branch of government, capable of checking the powers of Congress and the President. By affirming the Court's role in interpreting the law, Marshall laid the groundwork for the development of a robust judicial system that could uphold the Constitution against potential overreach by other branches of government.