Why was marbury v. madison a lankmark court ruling?

Marbury v. Madison, 5 U.S. (1 Cranch) 137 (1803), was a U.S. Supreme Court case that established the principle of judicial review in the United States, meaning that American courts have the power to strike down laws, statutes, and some government actions that violate the Constitution of the United States.

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one of the negative side effects were the economic losses the events of september 11th caused. many, many people lost their jobs as a result of a downturn in the economy after the terrorist attacks.