The civil war affected the northern economy by
a) causing a severe depression
b) increasing unemployment rates
c) stimulating industrialization
d) decreasing demand for agricultural products

C) stimulating industrialization

Explanation:

With the end of the civil war, the United States counted 600,000 dead, the devastation of the southern states, which weakened economically and politically, while consolidating the northern hegemony, which had stimulated industrialization, with the victory. With this, the capitalist and bourgeois spirit triumphs, guaranteeing the American economic growth. Soon the United States became the economic powerhouse of the capitalist world.