I am most certain that this answer is william wordsworth.
The best and most correct answer among the choices provided by your question is the second choice which is "railroad tracks."
<span>By 1860 the Midwest and the East were united by a network of railroad tracks.</span>
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Answer:
The imaginary line dividing Europe between Soviet influence and Western influence.
Explanation:
Winston churchill used the term iron curtain to refer to the the imaginary line dividing Europe between Soviet influence and Western influence.
Some of the pull factor codes were things like the Homestead acts which were a series of acts on land allocation. For example, if you went westwards, the country would give you a huge piece of land which would become fully yours after five years of successful agricultural business.