The first Supreme Court case to uphold the supremacy of the federal government over state governments was
The first Supreme Court case to uphold the supremacy of the federal government over state governments was Correct Answer McCulloch v. Maryland
The 1819 ruling in McCulloch v. Maryland established the implied powers of the national government; the authority of the federal government to act, the Court ruled, could come from the Necessary and Proper Clause of the Constitution. Gibbons v. Ogden was an 1824 Court decision giving the power to regulate interstate commerce to Congress. Mapp v. Ohio was a 1961 decision stating that evidence found during "unreasonable searches and seizures" could not be used against a defendant. Betts v. Brady was a 1942 decision that stated the government didn't have to provide a lawyer in a state trial to a defendant who couldn't afford one (this was later overturned). Escobedo v. Illinois was a 1964 decision stating that suspects have a right to an attorney during interrogation.