The invention of the jet engine had a profound social effect on the world. Commercial jet aircract revolutionized travel, opening up every corner of the planet. Millions were able to travel anywhere in the world. Few know the jet engine was invented by an Englishman in 1929, with the first jet airliner being the British de Havilland Comet. Britain then gave the technology away, not only to the United States, but also to the Soviet Union. Jet engines...