How did southern states respond to the ratification of the Fifteenth Amendment?

In the late 1870s, the Southern Republican Party vanished with the end of Reconstruction, and Southern state governments effectively nullified both the 14th Amendment (passed in 1868, it guaranteed citizenship and all its privileges to African Americans) and the 15th amendment, stripping blacks in the South of the right to vote.

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The south didnt like the idea,  The Southern state governments effectively nullified it.

Explanation:

In the late 1870s, the Southern Republican Party vanished with the end of Reconstruction, and Southern state governments effectively nullified both the 14th Amendment (passed in 1868, it guaranteed citizenship and all its privileges to African Americans) and the 15th amendment, stripping blacks in the South of any rights.

concurrent jurisdiction is the ability to exercise judicial review by different courts at the same time, within the same territory, and over the same subject matter. for instance, a domestic violence matter may be heard in either a general civil court or a family court in the same county. whichever court actually exercises its jurisdiction first will do so exclusively.

i am pretty sure it is d.