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Inventions

1. In which year was MIDI introduced?
1983


2. In which decade was telephone invented?
1870s


3. In which decade was Internet first implemented?
1960s


4. When were the blue jeans invented?
1850s


5. When was toothbrush invented?
1770


6. When were bar code scanners invented?
1970s


7. Who invented battery?
Alessandro Volta


8. When was the first elevator built?
1743

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