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KEY INVENTIONS AND POWER SUCCESSION
THE CHIEF FACTORS IN PRIMARY CULTURE
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activities adapted ancestors ancient and/or Animal Power ape-men apes areas Australopithecine basic became behavior blood vengeance breeding association Brit capacity century B.C. Childe city-state complex culture types cultures in equilibrium customary customs Deuel Dewhurst earlier earliest economic energy engines eras exist factor farming fire forms fossil gristmill habits hoe-culture hominid horsepower human hunting tribe Illinois State Museum increase individual Industrial internal combustion engine key inventions Kinship labor living Lower Paleolithic males man-apes mankind manpower Middle East military millennia natural forces onagers ox team Paleolithic peasant persons plow political pongid population prehuman presumably primate prime mover primitive hunting probably relative religion Roman Republic sailing ships sanction sizable slaves society species steam structure subhuman succession Sumer Table technologies tion tribal tribe or nation unit Upper Paleolithic Urban utilized wagons water mill weapons western Europe wheel-and-axle wheeled vehicles