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The Wright brothers make the first maned flight.
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During WWI they needed better airplanes for fighting purposes. Many advances were made at this time, including faster and lighter planes.
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Boeing made the 247 plane. It could seat up to 10 people.
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Pilots and engineers in California tested a theory called the area rule. Using it, they were able to make sleeker, faster airplanes without using bigger engines.
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During the 90's engineers invented planes using non-metal materials that couldn't be detected by radar. Shortly after that, the stealth planes were invented.
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