Answer:

Step-by-step explanation:
The case of Marbury v. Madison is often considered a landmark Supreme Court Case.
In this case, Marbury wanted his commission for being a judge, but Madison refused to give it to him. Marbury wanted a writ of mandamus to force the government to give him the commission.
Chief Justice John Marshall made many important decisions. The most important was that the Judiciary Act of 1789, which allowed writs of mandamus, was unconstitutional.
This established the principle of Judicial Review for the judicial branch of the government. They can check the other branches by stating a law or act is not constitutional.