How was human civilization established in the area called the Fertile Crescent

the correct answer is d

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.

trade

explanation:

b: to eliminate competition from other farmers