What was the importance of the supreme court case Marbury v. Madison (1803)?

The primary significance of the Marbury v. Madison case that was argued before the Supreme Court in 1803 was that "A)This was the first time that the Supreme Court had declared an act of Congress unconstitutional," since established "judicial review".

Explanation:

step-by-step explanation:

s the president shall be commander in chief of the army and navy of the united states, and of the militia of the several states, when called into the actual service of the united states; he may require the opinion, in writing, of the principal officer in each of the executive departments. sooo yeahhh

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