Презентация "Изобретения, которые потрясли мир" 9 класс

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Why are there a lot of various everyday life modern inventions (gadgets).?
Why does a modern man need them?”

The problem is:

In 1876 Alexander Graham Bell, an American engineer, invented telephone. In 1895 the Lumiere brothers patented their cinematography and opened the world’s first cinema in Paris. In 1908 US automobile manufacturer Henry Ford created the world’s first car assembly line. John Logie Baird from Scotland invented television in 1962. Akito Morita (Japan ) developed the first personal stereo – Sony Walkman. In 1908 James M. Spangler from the USA built the first vacuum cleaner. In 1981 Bill Gates (USA) created Microsoft –DOS (Disk operating System ). Advantages and disadvantages