The American airplane industry was taking off in the 1920s. After the Wright brothers' initial flight in 1903, they continued to Improve upon their idea. When they finally made a plane that the military could accept, the airplane industry exploded. Each country was trying to outdo each other, and when WWI came around, they used planes extensively.
When WWI was over, pilots would take their skills to small towns and air shows and show the public what they could do. As the stakes got higher and the prize money started getting bigger, more advances in design and structure came about. As people wanted to go faster, they started making planes out of aluminum and other metals instead of wood. Engine manufacturers sprung up and started making high powered engines that would make the planes go faster and faster. Charles Lindbergh got paid 25,000 after he was the first to cross the Atlantic Ocean. Amelia Earhart was the first woman to cross the Atlantic and Pacific Oceans. Charles Kingsford Smith was the first person to circumnavigate the world in 1929. Pan American Airlines started out as the primary US mail carrier, but soon expanded into a worldwide corporation.
The innovation that occurred during the 1920s was very great and it shaped the airplanes of today and the way we we depend upon airplanes.
Lockheed Vega

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Brief overall.