Final answer:
Import quotas are used to restrict trade by limiting the quantity of imported products.
Step-by-step explanation:
The requirement for products to contain a percentage of local content in order to gain admission to a market is an example of the stringent usage of import quotas to restrict trade.
Import quotas are numerical limitations on the quantity of products that a country can import. They are used to control trade by limiting the amount of foreign products that can enter a market.
For example, during the 1980s, the Reagan Administration imposed a quota on the import of Japanese automobiles, which restricted the quantity of Japanese cars that could be imported into the United States.