试题题干
The difficult period of political, social, and economic changes in the South after the American Civil War is known as （）.
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试题解析
本题考查美国内战。This difficult period of political, social, and economic changes in the South after the Civil War is known as Reconstruction.美国内战后南部这段政治、社会和经济变革的艰难时期被称为重建时期。