I would say either A or C, but i'm not positive, my research didn't tell me much, sorry!
True
After WWII, U.S. relations with Japan have warmed up.
Under Gorbachev's policy of "glasnost" he attempted to make the Soviet system and the communist party more accountable to the people and less corrupt. Therefore, he attempted to open the system and allow debate and free speech. The best answer to this question is D) citizens and the press were free to criticize the government.
This allowed the north and south (free vs slave) states to have equal control in congress. If one outnumbered the other, their ideologies would have become more prevalent across America.