Advanced Placement (AP), 06.05.2020 05:15, edmistontrace53

What led to a population increase during the Song dynasty in China?
The one child policy was lifted at the end of the Tang dynasty
Buddhist monks were allowed to marry which led to increased family size.
A new form of rice was introduced that was drought resistant and yielded
two crops a year.
Crops from the New World including the potato were introduced which led
to longer life expectancy rates.
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What led to a population increase during the Song dynasty in China?
The one child policy was l...