It was from vietnam but it was a tribute gift to china . The changes of the champa rice made it easier to feed more people which led to grow the rice faster which increased chinaĆ population .
Chinampa field system
chinampa field system was an man made built island .
The change of the system and the chinapmas caused agricultural
production to increase
orginally created by the aztecs
Waru waru
The Idea was having high raised land , this idea prevented the risk of crops flooding , soil erosion .
Helped alot with increased production of crops
Waru agricutural was used in andeans regions
of south american
Improved terracing Technique
The terrace farming was DEVELOPED in the andean region
The increase in food from this farming technique gave a rise to larger cities and population in the andean area
Horse collar
The invention of the horse collar
was brought by the chinese .
The invention had a huge impact
The horse collar made it easier to plow and more efficent which made it help generate food for the growing agricultural cities
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