Answer:
They provided a way to transport meat to eastern markets. They allowed cowboys to travel easily between cattle herds and their homes. They made it easier for ranchers to keep track of their herds.
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All the men fought in the crusades
Answer: On October 1, 1949, Chinese Communist leader Mao Zedong declared the creation of the People’s Republic of China (PRC). The announcement ended the costly full-scale civil war between the Chinese Communist Party (CCP) and the Nationalist Party, or Kuomintang (KMT), which broke out immediately following World War II and had been preceded by on and off conflict between the two sides since the 1920’s. The creation of the PRC also completed the long process of governmental upheaval in China begun by the Chinese Revolution of 1911. The “fall” of mainland China to communism in 1949 led the United States to suspend diplomatic ties with the PRC for decades.
The correct answer is D) nothing specific
At that time, the US focused on other things such as repairing Europe and ensuring that it's economy was the strongest in the world. It was not so important for the US that Mao Zedong took over China.