Protectionism:Protectionism refers to government policies and actions designed to shield a country's domestic industries and markets from foreign competition through the use of tariffs, quotas, subsidies, and other trade barriers.
Mercantilism:Mercantilism is an economic system that promotes government intervention and regulation of international trade to generate wealth and strengthen the state, often at the expense of other countries.
Import Substitution Industrialization (ISI): ISI is a development strategy that aims to replace foreign imports with domestic production, often through the use of trade barriers and government subsidies to promote the growth of domestic industries.