Which statement about social stratification is true?

a. it no longer exists.
b. it is found in all societies.
c. it is more common in newer societies.
d. it is decreasing around the world.

The correct option is B

Social stratification is the way in which society is grouped into recognizable social strata according to different categorization criteria. The conformation of groups is taken into account according to established and recognized criteria, such as occupation and income, wealth and status, social, economic or political power. Social stratification accounts for or is a means to represent the social inequality of a society in the distribution of material or symbolic, economic or cultural goods.

the mongolian invasion of china and central asia resulted in a disruption of the silk road as the chinese garrisons lost support from the chinese kingdoms which fell under the mongols. however, as the mongols established a formal dynasty in china, the successors of genghis khan restored the garrisons along the silk road allowing the safe travel caravans again.

i think it was because of how protected egyptian civilization was was which allowed them to evolve without much outside influence.