Answer:
A trade barrier that taxes certain imported or exported goods is called a tariff.
Explanation:
A tariff is a tax imposed on goods that are imported or exported between countries. It is a form of trade barrier that aims to protect domestic industries by making foreign goods more expensive and less competitive. Tariffs can be specific (a fixed amount per unit) or ad valorem (a percentage of the value of the goods). They are typically imposed by governments as a means to regulate trade and protect domestic industries from foreign competition. Tariffs can impact the price of goods, the quantity of imports and exports, and overall trade relations between countries.
