Which of the following Reconstruction actions implemented in the South was most responsible for the political developments illustrated in the picture?
A. A Congressional action which initially allowed only adult black males and those white males who had not taken part in the rebellion to vote
B. Federal government action returning plantations to the original southern white owners
C. A presidential order permitting Southern states to elect to public office only those who swore an oath of loyalty to the Union
D. A Congressional action which permitted only African Americans to vote or run for office in the South