world cultures

I am working on a project for school and I can't seem to find the year that these Chinese inventions were invented.

Yo-yo.
Compass.
Acupunture.
Wheelbarrow.
Printint.

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  1. http://en.wikipedia.org/wiki/Yo-yo

    http://en.wikipedia.org/wiki/Compass

    Keep using the search box at the left side of the screen in Wikipedia to search for the rest.

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