Why was the Marbury vs Madison ruling a turning point for the nation?

The Marbury v. Madison ruling in 1803 was a turning point for the nation because it established the principle of judicial review, allowing the Supreme Court to declare laws unconstitutional. This significantly strengthened the judiciary's role in the American government and ensured a system of checks and balances among the branches. The decision affirmed the power of the courts to interpret the Constitution, shaping the trajectory of American law and governance for generations to come. Ultimately, it solidified the judiciary as an equal partner in the federal government.