When it was collapsed in 1989
I think it's either A or C. I'm 80% sure it's A
Answer:
Paddy cultivation plays a significant and vital role on rice production. Most of the global population depends on the 480 million tons of rice produced each year as the basis for their lives.
The increased agricultural production of the 18th century can be traced to four interrelated factors:The increased availability of farmland.A favorable climate.More livestock.Improved crop yield.