America wasn't discovered, it was built. At the end of the Civil War, America was seen as a failing experiment in democracy; a nation fraying from the inside and at war with itself. Just 50 years later, the United States was the greatest superpower the world had ever seen. This landmark transition was due in no small part to a group of business-savvy, innovative young men: John D. Rockefeller, Cornelius Vanderbilt, Andrew Carnegie, Henry Ford, J.P. Morgan and Thomas Edison. These men constructed a bold vision for a modern America and transformed the greatest industries of our time, including oil, rail, steel, shipping, automobiles and finance; they are unequivocally America's first captains of industry.