The answer is A
because To further protect the rights of freedmen, Congress passed the fourteenth amendment to the constitution. The basic principle underlying this amendment, Stevens said, was that state laws "shall operate equally upon all." the amendment reversed the Dred Scott decision by defining "all persons born or naturalized in the United States" as citizens. It further prohibited any state from denying its citizens "due process" or "the equal protection of the laws" The Fourteenth Amendment became a major issue in the election of 1866. President Johnson toured the north, making fiery speeches against the amendment and its republican supporters. His tour did the president more harm than good. Republicans won a veto-proof, two-thirds majority in both houses of congress. From that point on, Congress would control reconstruction
