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It might be said that modern aviation began on November 21, 1783 in France when two brothers went aloft in a hot air balloon. The true beginning of the era is usually considered to be December 17, 1903 when the Wright Brothers flew the first heavier than air powered plane a few hundred feet off a sand dune at Kitty Hawk, North Carolina.
from: http://ezinearticles.com/?A-Brief-History-of-Modern-Aviation&id=403118
