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ch15B Age of Progress (Last name only)

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