The document summarizes and analyzes three different photographs. For the first photo of boys on bikes, it infers that the photo was taken when the Nazi party was in power based on the boys making the Nazi salute. The second photo of US soldiers suggests it was taken during the Vietnam War based on the surroundings. The third photo of men pouring liquid down a drain is thought to be from Prohibition since the liquid foams, and the attire and language in the background point to an older photo.