CEVAP:

Tariffs gradually replaced quotas in the 1920s. However, during the “Great Depression” of the early 1930s, implementation of quotas again became widespread.Tariff is a tax or duty to be paid on a particular class of imports or exports. Tariffs are generally used by governments to protect domestic industries from international competition or to create revenue. There are mainly two type of tariffs; specific tariff and ad valorem tariff. While specific tariff refers to the fixed charge for each unit, ad valorem (on the value) tariff is imposed as a proportion of the value of imported products. In some cases, there are compound tariffs that mean a mixture of specific and ad valorem tariffs.