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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<span>captured and burned Washington, D.C.</span>
Answer:
D
Explanation:
a republican agenda is correct
The answer is A, bc u can clearly see the rest are effects of the spanish Colonies