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.
Who invented the first robot? Archytas was an ancient Greek mathematician. His creation, a wooden dove that could fly up to 200 meters connected to a cable, was not only the first robot but also one of the earliest flight studies. In 200 B.C., Ctesibus, another Greek inventor, made an automated water clock with movable hands.