The European balance of power broke down was an effect following German unification is correct answer due to fact that Germany (except Austria) was united by militarist state of Prussia with powerful army which definitely change balance on the European scene especially that formal unification took place just after end of Franco-Prussian war which humiliated France.
Poverty and poor relief, especially in times of acute food shortages, were major challenges facing Virginia and Confederate authorities during the American Civil War (1861–1865). At first, most Confederates were confident that hunger would not be a problem for their nation.
The russians practiced communism where as the west (usa,britain,france) were anti communist. the us were capitalists , thus is would make sense that the ussr and the usa would clash eventually despite their pasts of helping eachother out. once russia clashed with the west it gave way to the cold war
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