The Answer to your question is "B"
The two culture areas where farming was the main way of life is Southwest & great plains
<u>Explanation:</u>
Farming which comes under the category of primary activities of the economic activities is the major source of living of a large number of people living in different parts of the world where farmers grow crops and do cultivation according to the geographical conditions of the area and earn their living according to this activity.The two areas of southwest & great plains are Ancient China and Mesopotamia. These areas where this activity was very important for living was the region of Ancient China and the region of Mesopotamia.
It relied on slaves to produce cash crops
