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No one knows who invented it, but it is sure that it was in Mesopotamia.
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This first writing system was invented in Egypt, it was an old hieroglyphic.
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It was created by Cai Lun, in China.
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It was created by Johannes Gutenberg, in Germany.
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It was created by Gilbert and Volta.
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It was created by George Stephenson and Richard Trevithick, in the Great Britain.
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It was created by Alfred Nobel, in Sweden.
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It was created by Guillermo Marconi, in Italia.
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It was created by Wilhelm Conrad Röntgen, in Germany.
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Wright brothers made this first flight.
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The creator was John Logie Baird.
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Alexander Fleming invented the peniciline.
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It was invented by the bulgarian John Vincent Ansoff.
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It was invented by Narinder Singh Kapany.
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It was created by Nick Holonyak.
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Hedy Lamarr invented the Wi-Fi.
