Answer: Germany invaded poland
Explanation:
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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Homestead Act accelerated the settlement of the western territory by granting adult heads of families 160 acres of surveyed public land for a minimal filing fee and 5 years of continuous residence on that land.
Answer:
They promoted greater social equality but failed to eliminate poverty.