These are girls jobs: spying on Civil War and taking letters to different areas, doctors-there was a big line of doctors. The men said that is not a job for girls. Before the Civil War there were a lot of slaves. The Americas were fighting about slaves. The End.
Notice the girl spies in the tree and the slave and his owner in the lower left corner. I both love it and find it interesting that she did not use color to indicate the person who was a slave in this picture.