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African Americans advanced civilization during the middle ages:
The Kingdom of Kush--- Though often overshadowed by its Egyptian neighbors to the north, the Kingdom of Kush stood as a regional power in Africa for over a thousand years. This ancient Nubian empire reached its peak in the second millennium B.C., when it ruled over a vast swath of territory along the Nile River in what is now Sudan
The Land of Punt--- Few African civilizations are as mysterious as Punt. Historical accounts of the kingdom date to around 2500 B.C., when it appears in Egyptian records as a “Land of the Gods” rich in ebony, gold, myrrh and exotic animals such as apes and leopards. Egyptians are known to have sent huge caravans and flotillas on trade missions to Punt
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For an amendment to be made, two-thirds of the members of each house of Congress must approve it, and three-fourths of the states must ratify it. Congress decides whether the ratification will be by state legislatures or by popularly elected conventions in the several states (though in only one instance, that of the Twenty-First Amendment, which repealed prohibition, was the convention system used). In many U.S. states, proposed amendments to a state constitution must be approved by the voters in a popular referendum.
In Russia, World War I became the catalyst for the ovethrow of Czar Nicholas II and the rise of the Communist Party (Bolshevik Revolution) led by Vladmir Lenin. Russia became the first Communist country. Communism eventually spread to small countries near Russia and eventually spread to Cuba, China and Vietnam.
C oligarchy hope this helps
