Probably the most important supreme court decision was in which the court ruled

Marbury v Madison, Judicial Review is the correct answer.

Explanation:

In the Marbury v. Madison the US supreme court established the Supreme courts right of Judicial review. The case arose when President John Adams appointed William Marbury as the justice of the peace, the secretary of state refused to give Marbury the document of appointment. Marbury filed a case against the secretary of state. The case was heard by John Marshall who said that Article three of the US constitution didn't allow one branch of the federal government to force any action on other branch. In this case, John Marshall ruled that William Marbury was entitled to the position of Justice of Peace but the final decision belonged to the new president Thomas Jefferson.

is there answer choices?

answer; ethnocentric;