Eufaula, Alabama. Eufaula is the largest city in Barbour County, Alabama, United States.
Leonardo da Vinci (1452â1519) is generally credited with inventing the helicopter, but the first practical design was developed only in the 1930s by Russian-born Igor Sikorsky (1889â1972). Today, typical uses for helicopters include military transportation and air-sea rescue.eonardo da Vinci (1452â1519) is generally credited with inventing the helicopter, but the first practical design was developed only in the 1930s by Russian-born Igor Sikorsky (1889â1972). Today, typical uses for helicopters include military transportation and air-sea rescue.
Gustave Whitehead invented and flew the  world's first airplane in 1901, at Fairfield, CT. His monoplane,  called No. 21 or the Condor, was based on Count D'Esterno's and  Otto Lilienthal's designs.  The brothers Orville and Wilbur Wright were two Americans who are  gener â¦ ally credited with inventing and building the world's first  successful airplane and making the first controlled, powered and  sustained heavier-than-air human flight, on 17 December  1903 in Kitty Hawk, NC on December 17, 1903.