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목록Barbed wire (1)
공학박사 권경안
Barbed wire, first patented in the United States in 1867, played an important part in the development of American farming, as it enabled the settlers to make effective fencing to enclose their land and keep cattle away from their crops. This had a considerable effect on cattle ranching, since the herds no longer had unrestricted use of the plains for grazing, and the fencing led to conflict betw..
English./TOEFL, GRE
2011. 2. 26. 15:00