In the United States, "The American System" Referred to

In the United States, "the American system" referred to

A) the use of slaves rather and serfs in agricultural production.
B) acquiring colonies in the Pacific rather than in Africa and Asia.
C) the geographical expansion to the west rather than to the east as in Russia.
D) a reliance upon agriculture rather than industry throughout the nineteenth century.
E) the use of interchangeable parts in industrial manufacturing.