necessity is the mother of invention justify the statement with the help of example of life of early man
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When early man wanted heat to
protect the body of cold winters, he discovered fire by rubbing two stones.
When he wanted to make huts for shelter and utensils carved out of stones, he invented tools.
When it became necessary to cover the body, early man discovered cloth.
When it became difficult to travel by foot, early man invented animal driven transport.
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When a person needs something and it is not available then he will try to invent something that fulfills his requirements.
If there is no necessity of something then no one would bat an eye to make an invention.
The best example is invention of Telephone, Alexander Graham Bell wanted to communicate faster than the letters and telegrams and that's when he invented the telephone
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