Mention the invention of the 20 th century
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A massive amount of new technologies were developed in the 20th century. Technologies such as electricity, the incandescent light bulb, the automobile and the phonograph, first developed at the end of the 19th century, were perfected and universally deployed.
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Radio. ...
Antibiotics. ...
Television. ...
The Airplane. ...
The Automobile. ...
The Personal Computer. ...
Rocketry. ...
The Submarine.
and many more
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