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It demonstrated the strength of southern Democrats and the end of Reconstruction.
I'd say its A, because after wars things start to decline.
I hope this is right and helped you out.
Answer:
social democracy is a political and social philosophy within socialism. As an economic ideology and policy regime, it is described by academics as advocating economic and social interventions to promote social justice within the framework of a liberal-democratic polity and a capitalist-oriented mixed economy.
Explanation: