How did a surplus of crops lead to a more complex society?
A,)People were able to eat a variety of foods.
B.)People no longer had to share food.
C.)Parts of the population were freed up to do different kinds of work.
D.) People could feed their goats with grain instead of letting them graze.
If you have a surplus of crops, you do not need to put in nearly as much time and effort into agriculture. In turn other aspects of society could thrive. This would include architecture, music, defenses, literature, etc.