Transcription: World War II and the Cold War spurred the development of airplanes that flew faster, higher and farther than ever before. In 1939, Germany developed the first successful jet airplane, soon after the British and Americans developed jets. In 1947, Chuck Yeager of the United States Air Force became the first pilot to fly at supersonic speeds, speeds greater than the speed of sound. In 1955, the United States developed the U-2 spy plane to fly higher than Soviet missiles could reach and to cover great distances nonstop. Aircraft manufacturers also developed jet airliners such as the 1958 Boeing 70 ...
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