Economic nationalism meant

a. nations would not trade with former Central Powers.

c. nations discouraged imports.

b. markets became more international.

d. nations concentrated on production of war materials.

C. Nations discouraged imports

Economic nationalism is the extensive promotional behaviour of favouring of goods and services produced in a particular country or in a respective group of countries. The act of economic nationalism can be practiced in two fundamental ways, either through demand stimulation or through supply protection. The idea of economic nationalism operates under the notion that a particular country’s economy will flourish and perform best if its industries are withheld and protected from a majority of external competition.