A homologous mixture has the same composition throughout<span />
I believe the answer is: They are based on the arbitrary borders of old European empires
African continent was colonized by different european empire. To avoid conflicts among the european, they divided africa into several territories and dtermine which country has the jurisdiction over each territories. After African nations gained independence, they still use this separation as borders to differentiate one country with another.
Foreigners have no political power in the united states. <span />
Letter A and Letter D are correct.
Comparative advantage is the ability of a country to produce services and goods for a lower opportunity cost if compared to its trade partners. The Comparative Advantage Theory states that a country should always specialize in the production of products or services that have a lower opportunity cost for them.<u> In this situation, Country A has a comparative advantage in the production of computer, therefore Country B should import computers from country A.</u>
