Ancestors knew how to harness horsepower...
Sigaut
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D000383:Agriculture / Q000266:history*; D000822:Animal Husbandry / Q000266:history; D000818:Animals; D000829:Animals, Domestic; D002681:China; D005060:Europe; D049690:History, Ancient; D049691:History, Medieval; D006736:Horses; D006801:Humans