Comparison What Items Looked Like When They Were First Invented

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4 years ago
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These are what these items used to look like when they were FIRST INVENTED! Have you ever wondered what the first X-RAY LOOKED LIKE? Or what about the first HELICOPTER! Watch this video to find out!

Sources:
https://pastebin.com/eRKkWGkb

This probability comparison/comparison video is made based on community discussions and relevant sources, numbers, and facts listed might not be up to date, valid, or in any specific order.

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