Who believed that all history was the history of class struggles and that the proletariat would overthrow the bourgeoisie?

a) john mcadam

b) keir hardie

c) karl marx

d) adam smith

The answer to this question is: Karl Marx
Karl Marx argued that no matter how much capital that the bourgeoisie owned, they still rely on the proletariat in order to keep their business running.
So, karl marx believed in the utopia world when eventually all people gathered together to eliminate wage gap by overthrowing the business owners in the society.