Discover how the world's biggest ideas, inventions, and actions changed the course of history!What would life be like if the Age of Reason never challenged others to think differently, if the Industrial Revolution never happened, or if the New York Stock Exchange never came into existence?801 Things You Should Knowgives you the lowdown on thoughts and events that transformed past civilizations into the cultures that we know today. Each entry explains a game-changing concept or moment in time, detailing how it helped shape societies around the globe. You'll uncover fascinating details you'd never heard before, and be surprised to learn how these major influences have directly impacted the way you live.From the sixth century B.C. to the present day, you'll discover the captivating people, acts, and ideas that have inspired change—and revolutionized the world.