How was the constitution amended after the civil war?

The Reconstruction Amendments are the Thirteenth, Fourteenth, and Fifteenth amendments to the United States Constitution, adopted between 1865 and 1870, the five years immediately following the Civil War. The last time the Constitution had been amended was with the Twelfth Amendment more than 60 years earlier in 1804.

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The most obvious constitutional result of the Civil War was the adoption of three landmark constitutional amendments. ... Finally, the 15th Amendment, ratified in 1870, prohibited the states from denying the franchise to anyone based on “race, color, or previous condition of servitude.”Jun 2, 2015

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to force terrorists groups to stop attacking western targets using massive military force.