How did the Black Death spread to Africa?

How did the Black Death spread to Africa? From Crimea, it was most likely carried by fleas living on the black rats that travelled on Genoese slave ships, spreading through the Mediterranean Basin and reaching Africa, Western Asia and the rest of Europe via Constantinople, Sicily and the Italian Peninsula. How did the plague die […]

What is the oldest type of human society?

What is the oldest type of human society? Beginning about 250,000 years ago, hunting-and-gathering societies are the oldest ones we know of; few of them remain today, partly because modern societies have encroached on their existence. What do postmodern societies focus on? In an economic sense, postmodern society is a society based upon the idea […]

What is the process of conduction?

What is the process of conduction? Conduction is the process by which heat energy is transmitted through collisions between neighboring atoms or molecules. The fire’s heat causes molecules in the pan to vibrate faster, making it hotter. What type of energy is transferred by conduction? Heat can be transferred in three ways: by conduction, by […]

What is McNamara known for?

What is McNamara known for? McNamara, in full Robert Strange McNamara, (born June 9, 1916, San Francisco, California, U.S.—died July 6, 2009, Washington, D.C.), U.S. secretary of defense from 1961 to 1968 who revamped Pentagon operations and who played a major role in the nation’s military involvement in the Vietnam War. Who was Robert McNamara […]

Does secondary succession occurs in an area that already has life and soil?

Does secondary succession occurs in an area that already has life and soil? The stages of secondary succession are similar to those of primary succession; however, primary succession always begins on a barren surface, whereas secondary succession begins in environments that already possess soil. What happens secondary succession? Secondary succession, type of ecological succession (the […]

What is the difference between direct and representative democracy?

What is the difference between direct and representative democracy? In a representative democracy people vote for representatives who then enact policy initiatives. In direct democracy, people decide on policies without any intermediary. Two leading forms of direct democracy are participatory democracy and deliberative democracy. Can a democracy be both direct and representative? A democracy can […]

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