Answer:
A. Federal troops left the South.
Explanation:
The 1876 U.S. presidential election resulted in the United States federal government pulling the last troops out of the South, and formally ended the Reconstruction Era.
Since the states printed their own money, trade between the states was almost impossible.
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To expand to new territories and to defend the kingdom. however he warns that its not enough having a strong army but to maintain morale among the troupes and citizens
The correct answer is b. the growth of the federal government during world war l