The transcontinental railroad helped to increase the speed at which coast to coast communication was possible. The railroad allowed for materials, people, goods, and messages to be transported more quickly from coast to coast increasing the pace of communication.
Often, the conditions that children and workers worked in were unsafe and they worked long hours with no rest. they worked all day. sometimes they would get stuck in machinery and get hurt or even die. also, working in factories caused health problems for many children and workers.
Answer:
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The answer is the North Vietnamese took over the South Vietnam spreading communism Southward and this proved the domino theory (if one country come under the influence of communism, the surrounding countries would follow).
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