What was the role of middle classes in ending the privileges?

What was the role of middle classes in ending the privileges?
Answer:
In the past, peasants and workers had participated in the revolts against increasing taxes and food scarcity. But they could not change the social and economic order. This was left to those groups within the Third Estate who had become prosperous and had access to education and new ideas. The 18th century witnessed the emergence of social groups termed as middle class who earned their wealth through an expanding overseas trade and from manufacturing goods and exporting them. In addition to merchants and manufacturers, the Third estate included professions such as that of lawyers or administrative officials. All of these were educated and believed that no group in society should be privileged by birth. Rather, a person’s social position must depend on his merit.