The correct answer is A. Reconstruction of Congress.
Explanation
Reconstruction was the post-civil war stage in the United States in which the defeated Confederate states had to discard their intention of independence and accept belonging to the United States. In addition, they had to accept the reconstruction laws of 1867 in which measures were established such as the creation of five military districts in the southern territory in which the fourteenth amendment, which deals with civil rights, the declaration of slaves had to be ratified. released. . African Americans as citizens and where racial segregation is rejected and prohibited. Another important aspect of these laws was the declaration of the right to vote of the freedmen. So the correct answer is A. Reconstruction of Congress.