Marburg v. Madison established the principle that:

It seems there might be a typo in your question. I assume you are referring to "Marbury v. Madison." Marbury v. Madison is a landmark case in the United States that was decided by the Supreme Court in 1803. The principle established by Marbury v. Madison is known as "judicial review."

The key principle established by Marbury v. Madison is that the Supreme Court has the authority to review and potentially invalidate laws or actions that it deems unconstitutional. Chief Justice John Marshall, writing for the Court, asserted that it is the duty of the judiciary to interpret the Constitution and determine whether a law or government action is in line with its provisions. This decision solidified the concept of judicial review as a crucial aspect of the checks and balances in the U.S. government system.

In summary, Marbury v. Madison established the principle of judicial review, empowering the Supreme Court to review the constitutionality of laws and executive actions.