Concept taken from Rome, Athens, or the Enlightenment
The Founders’ Purpose for this Concept

d.prevent the spread of communism outside of eastern europe.

powers  are  denied  to the  national governmentin three distinct ways: some  powers, such as the  power  to levy duties on exports or prohibit the freedom of religion, speech, press, or assembly, are expressly  denied  to the  national government  in the  constitution.