A group that would most likely be supportive of the cartoon are (I'm assuming) the farmers who plowed the lands everyday yo receive very little in return. During the timeframe of the cartoon Ulysses S. Grant was president and also led the north to victory in the civil war.
I cannot see this cartoon but based on your description i would say that one theme would be that Reagan and Gorbachev did not get along well as two world leaders
C. Textiles will be the answer to this on apexvs
A presidential republic is one where the president is also the head of state, but he isn't involved in the legislative process and has his own executive branch. An example of this can be the government of the United States of America. Opposite of this would be a separation of powers where a president would not also be the head of the government.
The relationship between the antiwar movement and counterculture is that is both a civil war whose members were from college campuses, middle-class, labor unions and government institutions. These were the movements that was created in order to expose the separation with in the American society and create a new society with peace and love.