The idea ofdemocracy began in wich nations

"a government in which power is divided between state and national levels". federalism is a system of government in which entities such and state and province, share power with the national government.

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.