This 5-Foot-Long Chart Lays Out Over 4,000 Years of World History
Throughout the 1920s and 30s, “outlines” were gaining popularity. Dominating nonfiction book publishing, the trend sought to democratize knowledge, distilling subjects like philosophy, physics, and medicine into more digestible and approachable formats. It didn’t take long for John B. Sparks, an English engineer, bacteriologist, and historian, to join the movement and create his very own “outline.










































































