1.According to the article, why did Karl Marx think the economic system of the world would change?
(A)He believed the system of supply and demand failed at keeping prices from
changing.
(B)He believed the poor of the world would rise up and demand a system that treated them fairly.
(C)He believed a system run by the government would prove to be the most profitable.
(D)He believed competition among businesses created a system that lowered
their production.
