The civilizations of the Huang River valley and the Nile River valley were similar as both were ruled by dynasties. Option D is correct.
A dynasty is understood as a sequence of rulers from the same family, usually in the context of a feudal or monarchical system, but sometimes also appearing in elective republics. The longest-surviving dynasty in the world is the Imperial House of Japan, otherwise known as the Yamato dynasty, whose reign is traditionally dated to 660 BC.
It would be important because the ways we are using now are not very affective
A.
What A basically says is that the British allowed African American people to vote, since they where a minority and would never be too influential in elections.
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Generally speaking, it would be an association with "the European Union" that offers the brightest immediate future for many African countries, since this is a union of many countries with economic and moral interests in Africa, as opposed to just one.