Select all the correct answers. Which two factors explain why salt was so valuable to West Africans?
Salt helped prevent dehydration in the hot climate.
Salt was used as a form of currency.
Salt was one of the exotic goods traded by the Asian traders.
Salt was used to preserve food.
Salt was available only in Zimbabwe.

The congress shall have power to lay and collect taxes, duties, imposts and excises, to pay the debts and provide for the common defence and general welfare of the united states . .; to borrow money on the credit of the united states; to regulate commerce with foreign nations, and among the several states, and with the indian tribes. —constitution of the united states, article i, section 8 which of these are expressed powers granted by this part of article i, section 8? check all that apply. lay and collect taxes and duties pay debts regulate american indian groups regulate commerce within states borrow money regulate commerce with foreign nations

How did american entry into world war i affect the allied powers?

Ahistorian who compares the expansion of political systems to the expansion of economic systems is organizing history by o a. region b. culture c. period d. theme