Who invented Internal Combustion Engine?
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1) What inspired reflecting road lights to be invented?
2) What invention is credited to the Russian born American inventor Vladimir Kosma Zworykin?
3) Which of the following was first patented by an Australian in 1889?
4) Until Victorian times, chocolate was thought of as a drink. When did the first chocolate bar appear?
5) What Elmer A. Sperry invented?