There are many inventions that have changed the world so much. Here is ashort introduction. For example, a digital camera was invented by Steve J.Sasson. It was invented in 1975. People use it to take photos. The telephone wasinvented in 1876. It was invented by Alexander Bell. It is used forcommunicating with each other. Telephone makes it easier to communicate when youare far away from each other. Radio was invented by Guglielmo Marconi. It wasinvented in 1895. When you are free, you can use it to listen to the news andmusic. It also makes our life more interesting.
There are more inventions that have changed the world. They are veryimportant for us.
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