Answer:
The radical republican governments in the south protected and extended black people's civil rights, which led to the reconstruction of the american legal and political system.
Explanation:
The south extended the civil liberties of black people after the civil war. This led to a redefinition of what it means to be an American citizen. The republican party issued new legislation in order to extend the rights of black people, allowing black men to vote and partake in american civil life. These new meaures etended the power of the republican party.