What historical events do you know of that changed the evolution of American schools?

Martin luther king's protest.

Explanation:

Option C.

Explanation:

The workers, is the right answer.

The term proletariat is used to refer to the class of wage-earners in an economic community whose only property of important material cost is their labor-power. Any person of this class may be called as the proletarian. In the Ancient Roman Empire, the proletariat was made up of the poor landless freemen. In simple terms, they were the people with the lowest economic and social classes in a community.