I world say the answer is between 400 and 200 BCE
An expansion of credit and speculation.
Answer:
The development of settlements
Explanation:
The development of settlements is the main factor responsible for the conversion of food gathering and hunting of animals to food production by growing crops on the land. The people settle on those areas where there is a fertile land and good climatic condition for growing crops. These crops provide food to these people and they change their profession from hunting to growing crops.