Explain judicial review with at least one example of a decision.

Judicial review is the doctrine under which legislative and executive actions are subject to review by the judiciary. A court with judicial review power may invalidate laws and decisions that are incompatible with a higher authority, such as the terms of a written constitution.

and an example

Miranda v. Arizona (1966)

Judicial review is considered part of the check and balances system, as the judiciary supervises and controlls acts emanating from the executive and legislative branches of the government. An example is the precedent of "Marbury v. Madison"; this was the first case in which the judicial branch ruled that an act of Congress was unconstitutional. In this case the Court overturned appointments made by the Congress.

it took two men to wrestle rome back from chaos and turn a republic into an empire. in the first century bc, rome was a republic. power lay in the hands of the senate, elected by roman citizens. but the senators were fighting for power between themselves.