Is a system that is criticized for causing an income gap between the social classes. in response to this problem, two more theories, and were also developed during the industrial revolution

The system that is criticized for causing an income gap between the social classes is: Capitalism

Capitalism encouraged people to compete with one another in the pursuit of economic resources. Since the wealth that acquired by the initial winner of the competition is transferred to their children, their children born with massive advantage over those who do not possess many resources, and caused the enlarging of income gap between social classes.

a memoir is the correct answer