Events That Changed the World

The 20th century began with a sense of great optimism. Extraordinary breakthroughs in science and invention promised the dawn of an exciting new world. Yet great breakthroughs in military technology, combined with shifting ideologies and old rivalries, made the 20th century one of the most violent and tumultuous in world history. And the most progressive. Here we explore the people and minds behind some of the last century’s most significant events. Some have changed the way people think, o...