Other countries entered the on-going civil war and dividedly supported the republican or the nationalists. The German intervention triggered World War II when it supported the Nationalists, while France and Britain supported the Republicans. The military interventions led the countries to war.
Germany provided heavy military training and tactics to the Nationalists that later was formed as the Condor Legion, which led the Nationalists military. The Condor Legion experienced successive victories because of their rigorous training, however, in the end, they were defeated by Britain's army.
I think it would be the third one
C. defended their occupation of Detroit.
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Two of the major ways in which the Civil War amendments (commonly referred to as the Reconstruction Amendments) added to individual freedoms was that they abolished slavery and involuntary servitude (with the 13th Amendment) and made it so every US citizen had equal protection under the law (with the 14th amendment).