In pre-revolution france the nobility and kings were called the

There was a very distinctive social class system during the Middle Ages.  Most Medieval people were peasants, over 90%, but the divide between peasants and nobility was very clear-cut.  Clergy were also an important part of the social order during the Middle Ages, though they were not necessarily considered a separate class.

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congress also has implied powers, which derive from the necessary and proper clause of the constitution and permit congress "to make all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states.