Based on the theory of supply-side economics how does contacts has encouraged economic growth​

he discover   the sea route around africa hope that ! : )

explanation:

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.