Through photos, captions, sidebars, and text, see how the 1900s were a time of amazing discovery. Feats covered in this book include: how the Wright brothers invented the airplane, how Henry Ford built the Model T car, and how Albert Einstein solved mysteries of the universe. These are just a few of the astonishing feats. Robert Peary set out to reach the North Pole. Thousands of workers were digging the Panama Canal. U.S. soldiers and sailors went abroad. America was becoming a world power. The 1900s helped shape the course of human history.