"C. was overthrown by invading Mongol tribes in A.D. 1279" would be the best phrase describing China's Song Dynasty, but this was of course not always the case.
The Industrial Revolution is generally considered to have ended in the early 1800's. ... We are currently in the digital revolution, which many say started in the 80's (although a case could be made for before).
Answer:
True
Explanation:
All these ancient civilization developed social class systems, or even, social caste systems, because these social classes lacked mobility, and were mostly determined by birth.
The general rule was that there were roughly three classes: an upper ruling class, composed of kings, emperors, and warriors. A religious class, and lower class, which was composed of farmers.
Some of these civilizations also had a merchant class, and a slave class (the lowest of them all).
He separated his ideas into articles and sections to be able to clarify on each of the key complaints and details that needed to be fully understood or fixed
