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Answer:
Marbury v. Madison was one of the most important decisions in U.S. judicial history, because it legitimized the ability of the Supreme Court to judge the consitutionality of acts of the president or Congress.
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Explanation:
Marbury v Madison was a case in which the supreme court first declared an act of congress unconstitutional, thus
establishing the doctrine of judicial review.
McCulloch v Maryland was a case in which the supreme court ruled that congress had implied powers derived from
those listed in Article 1 section 8. The "Necessary and Proper" clause gave Congress the power to establish a national
bank.