The effects on their health was that widespread epidemics of viruses broke out like smallpox, tuberculosis, and typhus. This happened because an impact of the industrial revolution was rapid urbanization, which caused villages and towns to swell, overpopulating different places and making them hotbeds of disease and depredation. This was caused by the expanding industry swelling small villages
The U.S. Declares War on Germany. On April 2, 1917, Wilson went before a special joint session of Congress and asked for a declaration of war against Germany, stating: “The world must be made safe for democracy.