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<u>D. Industrialized Factories</u>
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Explanation:
<span>Assuming that this is referring to the same list of options that was posted before with this question, <span>the correct response would be the "railroad," since rail travel allowed for people and supplies to move to the west at an unprecedented pace. </span></span>
Answer:
America was moving towards an industrialized, modern, capitalist economy:
Industrialized because industry was becoming more important than agriculture.
Modern because scientific and engineering progress were being applied to industry in order to increase production and efficiency.
Capitalist because people were producing goods for profit, not just for mere survival.
<span>For the answer to the question above, the main actions between the main adversaries, for which the world should be grateful for, was that an all out nuclear war did not happen.
I hope my answer helped you. Feel free to ask more questions. Have a nice day!</span>
It was used to communicate using written language
