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Period: to
inventions
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Refrigerator
Refrigerator was invented by Jacob Perkins
its important because the food doesnt go to waste -
electric telegraph
Electric telegraph was invented by Charles Wheatstone (also Samuel Morse)
It help us win the civil war -
Revolving machine gun
Revolving Revolving machine gun was invented by Richard J. Gatling was invented by Richard J. Gatling
Now the U.S army use it to protect us -
photophone
Photophone was invented by Alexander Graham Bell
We update to projectors and we use it to help us teach -
Remote control
Remote control was invented by Nikola
It makes us not getting up to change the channel
