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What makes digital photography a military invention?

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Why is ENIAC invention important in world's history?

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When was the first Radar used?

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Why was synthetic rubber developed?

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What role does military play in invention of duct tape?

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How did safety razors become so popular?

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Why is microwave oven considered a military invention?

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Did Thomas Edison really invent "light bulb?"

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Who invented the first toothbrush?

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