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Please help Which technology and public project under Yangdi helped unite China? A. the Grand Canal B. a simple alphabet C. terraced farming D. the Great Wall

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Answer:

The grand canal

Step-by-step explanation:

User Iuriimoz
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The Grand Canal was a technology and public project under Yangdi that helped unite China, but it should be noted that there were other things as well. 
User WeePee
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