How did african americans strengthen the republican party in the aouth

African-Americans helped the Republican party in the South by voting for Republicans in local, state, and national elections during the era of Reconstruction. The era of Reconstruction, which took place right after the Civil War, resulted in African-American men gaining the ability to vote. They used this power to support Republicans, as Lincoln and many other Republicans advocated for more legal rights for African-Americans. Besides voting rights, most Republicans supported the 14th amendment. This amendment helped to grant citizenship to all former slaves who were born on US soil.