The nations that used strongly neomercantilist policies to achieve growth post-war are Japan, South Korea and China.
Neomercantilism, also called neo-mercantilism, is a system of economic policy that encourages exports over imports, regulates capital flows, and places the control of currency decisions in the arms of the central government.
These policies aim to boost the amount of foreign reserves kept by the government so that monetary and fiscal policy can be more effective.
In short, these policies maintain strict control over foreign trade so domestic markets can flourish.
Post second world war, these policies were adopted by China, Korea, Japan and USA to achieve economic growth.
The opposite of Neo-mercantilism is Neo-liberalism where a country allows free international trade with fewer restrictions than the former policy. India is one example of countries that use the concept of neo-liberalism.
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