Tang dynasty had underground wells and used a pump to irrigate crops
Also had very good agriculture achievements.
Heavy iron plow
Harness oxen ans water buffalo
Added manure and compost to soil
expanded food supply
and improved irrigation systems.
Tang expanded and traded with foreign lands silk trade reached a extreme high level.
Improved the grand canal which allowed Chinese to move crops and good farther distances
they used coins as currency.
Song ag. rice was improved by cultivation
there were better tools so there was more crops produced.
Importance
China was growing fast so there was a need for more food and supplies
The better technology supplied needed food to these people.
Song trade
Major exports were silk porcelain and tea
They also exported by boat
Copper coin shortages led to the development of paper money.
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