20 Rare Historic Photos That You Probably Haven't Seen Before

History gives us a better understanding of the world and how it operates. When you study a war, you learn more about how conflict escalates. You learn what dilemmas world leaders face and how they respond—and when those decisions lead to better or worse outcomes. Historical study shows you the warning signs of many kinds of disaster, from genocide to climate inaction. Understanding these patterns will make you a more informed citizen and help you take action effectively.