When a nation imposes a tariff on the importation of a commodity, economic inefficiencies develop that detract from the national welfare. explain
A tariff detract from the nation's welfare via its consumption effect &protective effect.
The main reason behind occurrence of economic efficiency in a nation after the imposition is tariffs on imported goods is that producers gain incentive to go to great lengths in order to dodge the duties by finding loopholes in manufacturing or even illegally smuggling products into other country
Protectionism is an economic policy to restrain certain trade through measures such as tariffs, quotas and regulations. It is often used to discourage imports of certain goods and to protect domestic markets in various ways. Protectionism is often regarded as a barrier to free trade