In 1956 the term Viet Cong came into use and gradually replaced the older term Viet Minh. The government-controlled Saigon press first started using the term referring to communists in South Vietnam as Viet Cong a shortening of Viet Nam Cong-San which means "Vietnamese Communist.
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domesticated animals were used to haul food over long distances
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It improved communication a lot not and enabled people to save money on transportation (its easier to call someone than write a letter and make someone on a horse ride for miles) not sure about the effects on power though.
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