tang had under ground wells made light weight pumps
heavy iron plow harnessed oxen to and water buffalo
enriched soil with manure and compost expanded food supply improved irrigation systems
tang trade routs traveled as far as Syria and the silk trade was prospering they used silk road as a trade rout and expanded the the grand canal
rice was improve by cultivation imported rice from Vietnam Ag routs where being developed
china was growing fast song dynasty had 100 million people 2 times as many as the tang dynasty
song dynasty major exports are silk porcelain and tea
traders used rivers to move products and stuff traed gunpowder they didnt have a lot of copper so they made paper money
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