Question

what do you mean by Green Revolution why was it caused

Answer 1

This rapid increase in agricultural production is called Green revolution. The large increase in agricultural production due to mechanized agriculture, use of High yielding variety of seeds, use of chemical fertilizers and plant protection by spraying pesticides, etc. is called Green Revolution.

Answer 2

This rapid increase in agricultural production is called Green revolution.

The large increase in agricultural production due to mechanised agriculture, use of High yielding variety of seeds, use of chemical fertilizers and plant protection by spraying pesticides, etc. is called Green Revolution.
The following are the main causes of green revolution:
Irrigation
Agricultural machinery
Fertilizers
HYV seeds
Plant protection
Research
New techniques
Marketing facilities
Price incentive
Multiple cropping
Government effort
Land reclamation