Final answer:
The Supreme Court ruled on federal and state authority to regulate business in cases like United States v. E.C. Knight, which limited the national government's control over manufacturing, whereas McCulloch v. Maryland and Gibbons v. Ogden expanded federal regulatory power over states.
Step-by-step explanation:
The Supreme Court has ruled on the authority of federal and state governments to regulate business practices in several landmark cases. Notably, in United States v. E.C. Knight (1895), the Court held that the national government could not regulate manufacturing as it was distinct from commerce among the states. Conversely, in McCulloch v. Maryland (1819), the Supreme Court established the doctrine of implied powers, affirming the federal government's ability to operate without interference from the states, as seen in the ruling regarding the tax on the Second Bank of the United States. Another significant case was Gibbons v. Ogden (1824), which supported a broad interpretation of the federal government's power over state governments concerning regulatory authority.