Asked by Bella from California | Sep. 01, 2014 13:51
About:Four Great Inventions of Ancient China
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What year was gunpowder in? When was gunpowder invented specifically? Asked by Peyton from USA | Nov. 04, 2014 00:24
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What was the year the first compass was invented. Asked by Mr.J from USA | Mar. 10, 2011 20:59
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What positive things has the invention gunpowder created? (really hard ques... Asked by Matthew from Vienna | Feb. 11, 2015 08:50
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what is the the new way of planting rice that was invented during the Tang... Asked by Jeanette | Oct. 08, 2012 01:38
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What did the Songs empire invent? Asked by Jenna from USA | Mar. 02, 2015 21:12
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what years did the Mongol Empire rule Asked by lololol | Feb. 28, 2015 00:59
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