Answer:
work only if other countries do not retaliate with their own trade barriers.
Step-by-step explanation:
Governments use import tariffs as a tool to impose protectionist policies. A tariff is a tax levied on all imports. The purpose is to make imports expensive in the domestic markets.
Governments may also use import quotas. Import quotas restrict the volume of imports allowed in the country.
One challenge in the application of tariffs and import quotas is retaliatory tariffs. Retaliatory tariffs are trade barriers imposed on a country by its trading partners as a response to it charging excessive duties.
Retaliatory tariffs make exports of a protectionist country uncompetitive.