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THE BACKGROUND OF CIVILIZATION CHAPTER PAGE 1 THE SUPREME FACT
THE BACKGROUND OF CIVILIZATION
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activity agriculture American animals animistic appears Asia atmospheric atmospheric electricity average Babylonia biological biological inheritance Caspian Sea cause cent century cities civilization climatic cycles climatic efficiency cold contrast countries crops cultural curve deathrate desert diet diseases effect electrical England especially Europe evidence example fact factor favorable Figure Genghiz Khan geographical groups Hakkas heredity human Huntington Iceland increase India indicate influence inheritance innate Japan Junkers Kikuyu kind kiths land latitudes less library circulation living maximum means mental migration Mongols mountains Nevertheless Newfoundland nomads North northern optimum ozone Parsis percentage period physical environment population produce progress Puritans qualities race rain rainfall regions relatively religion reproduction Russia season seems selection shows similar social solar constant stimulating storms summer sunspots temperament temperature tend tion trees tropical United vigor warm weather winter