Who has the highest authority within the state

The supreme court

Explanation:

Each U.S. state has its own state supreme court, which is the highest authority interpreting that state's law and administering that state's judiciary. Two states, Oklahoma and Texas, each have two separate highest courts that hear criminal and civil appellate matters.

tearing down the berlin wall.

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.