Question

Asked by Mr.valjibhai j makwana from India | Dec. 29, 2008 04:24

About:What is the Great Wall of China made of?

I think, different type of easy made-simple-durable machine and that type of technical instrument was used frequently.

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Answers (2)

Answered by Mr.Jordan from usa | Nov. 20, 2009 12:21

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What type of machines??

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Answered by Ms.SLEEPYHAMSTER from China | Nov. 21, 2009 21:00

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The machines which would greatly save laborer's strength, I think, such as crowbars and winding gears, but of course they were very simple, which could not be compared with modern machines.

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