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Keywords: marriage, children, war, economics, religion, society, childbirth, childrearing, gender , families, primitive, competition,

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冠霞 Guanxia (mentioned in article), 康培蘭 Kangpeilan (mentioned in article), 徼知 Jiao Zhi (Author),

Keywords: law, war, America, economics, military, language, animals, religion, finance, transportation, Freedom, Learning, society, nature, education, agriculture, evolution, workers, ethics,