Respuesta :
democracy, monotheism, and domestication of animals occurred before and during the classical era. So the correct answer is A.
Answer:
C. The development of monotheism
Explanation:
The post classical era is a period of tima that starts from the 450 AC to the 1400 DC, the main difference from other eras of the human history and what makes the main difference with the past eras was the fact that the monotheists religions started to spread over the world this was mainly because of the spread of Islam, Cristianism and Jewism.