The first civilizations didnt use metal very often, but when they did it was usually for farming tools.
The main reason why the US Senate is often called “the greatest deliberative body in the world" is because it allows each state to have an equal say in legislation regardless of the state's size, which is a powerful function.
North Korea I think hope this helps
D. Representatives
The Republican Form of government is one in which the powers of sovereignty are vested in the people and are exercised by the people, either directly, or through representatives chosen by the people, to whom those powers are specially delegated.
hope i helped, sorry if its wrong
