Here is a caption of 20-50 words describing your picture:
Here lies a beautiful peace of land, surrounded by a vast and lovely ocean. On this particular day, fluffy white clouds fill the blue sky. This small island lies in the middle of nowhere, so not many see it's true beauty.
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.