From 10th to 13th century, Chinese farming in the South China region was increasingly commercialized.
Explanation:
There was a burgeoning increase in trade during that time. This meant that the agriculture of china was at that time
-- commercialized to a great extent making cash crops more than the ones needed for subsistence.
-- using the cash crops and trading with northern china
--use of old tools but with some moderns arrangements like the till.
--use of a manure style that would be copied across the world
--finding of trade networks in collaboration with south east Asia.
-- a network of multi season crops spread across the land.
Lack of usable land, and poor conditions of soil
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It helps determine whether a site is safe from landslides, floods, and natural hazards.
