What was the name of the period of time after the civil war

Reconstruction Era

Explanation:  Reconstruction, in U.S. history, the period (1865–77) that followed the American Civil War and during which attempts were made to redress the inequities of slavery and its political, social, and economic legacy and to solve the problems arising from the readmission to the Union of the 11 states that had seceded at or before the outbreak of war.

a.) d-day invasion of normandy.

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b, the anti immigrant fervor