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ch15B Age of Progress (Last name only)

Across
The assistant of Alexander Graham Bell's assistant.
Man who developed the assembly line and used it to build the Model T inexpensive car.
Man who invented the light bulb and the phonograph.
Man who designed the first shoe-lasting machine.
Robert fulton's first successful steamboat.
Last name of brothers who built and flew the first successful airplane.
Teacher of deaf-mutes who invented the telephone.
Down
The gas mask and the traffic signal red, yellow, green were invented by this man.
In 1903 the Wright brothers built and flew this.
In 1876 this invention was created by Alexander Graham Bell.
Man who launched the first successful liquid-fuel rocket ever built.
Man who developed the first successful steamboat.
Man who invented the telegraph and developed the Morse code.