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Family treesb - PowerPoint PPT Presentation

youtube/watch?v=Wmrwj6DDt-4

http://www.youtube.com/watch?v=Wmrwj6DDt-4. What is this? . How did it all start?. First used on clay tables for business transactions in ancient Babylon Then used in China to sign documents in clay seals Fingerprints weren't used for identifying criminals until the 19th century (1800s)

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Family treesb - PowerPoint PPT Presentation

youtube/watch?v=Wmrwj6DDt-4