Germany, Austria-Hungary, Bulgaria and Ottoman Empire. Germany said that in the event that the United States enters the war, at that point Mexico would join the war. ... The war in Europe acquired a financial blast the U.S. since the European nations expected to obtain cash from somebody to pay for the entirety of the war supplies.
The first depiction represents before they gain freedom. Then after the emancipation. The left represents a dark time in history while the right takes the form of the slaves gaining freedom.