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.
The Great Compromise represented the interests of those seeking a strong national government and also those who wanted states to have a strong voice because it set up a bicameral legislature in which these values would be represented. By guaranteeing equal representation in the Senate and proportional representation in the House the Great Compromise sought to institutionalize these principles through compromise.
I think it is some city in china