Question

For which purpose does the government use trade barriers

Answer 1

the purpose is that the country own their products and not selling it and inexcgange. to it they ate using another products of country. for eg. China has put the trade barrier on India for their products and these product were sold high prices which people cannot afford

Answer 2

The most common barrier to trade is a tariff—a tax on imports. Tariffs raise the price of imported goods relative to domestic goods (goods produced at home). Another common barrier to trade is a government subsidy to a particular domestic industry. Subsidies make those goods cheaper to produce than in foreign markets.