Farmers in mesopotamia learned to irrigate their land, which allowed them to grow more crops than they needed. the surplus crops led to the development of trade and commerce. mesopotamians traded the extra crops for goods and services. the city-state of ur in sumer became a major trade center. the temples of ur were the main employer and location for commercial activity.

according to the passage above, what contributed most to the development of ur as a major trading center?
a.
the city of ur had many temples for trade and commerce.
b.
mesopotamian farmers were able to grow surplus food.
c.
the city of ur employed many people in temples.
d.
mesopotamia had a surplus of commerce and trade.