What constitut power did mcculloch v. Maryland in 1819 test?

McCulloch v. Maryland (1819) tested the scope of federal power under the Necessary and Proper Clause of the Constitution, as well as the supremacy of federal law over state law. The case arose when Maryland attempted to tax the Second Bank of the United States, which was deemed unconstitutional. The Supreme Court, led by Chief Justice John Marshall, ruled that the federal government had implied powers beyond those explicitly listed in the Constitution, affirming the authority of Congress to create a national bank. This decision reinforced federal supremacy over state laws and expanded the interpretation of federal powers.