D. Contain the spread of Communism in every region of the world
The domino theory said that if one country falls to Communism, then the nations it associates with will turn to Communism as well. So, the solution for this was try to contain Communism so it wouldn't spread.
The U.S. Congress, under the control of the Radical Republicans, passed the Military Reconstruction Act of 1867 on March 7, in spite of President Johnson's veto. This act sought to rebuild the governments of the southern states using the governments of the northern states as examples. It was also implemented to ensure that the civil rights of the free blacks in the South by requiring the states in the South to include the rights of free blacks in their constitutions!!:)
The answer is B. Slaves would count as…
Marked a break from the Neolithic culture of the Jomon and a shift toward a new culture that was probably influenced by immigrants from China and Korea.