There are lots of government practices. Legal and political practices such as quotas, tariffs, and business practice laws fall under the larger category of protectionism.
Protectionism is known to be a type of policy that is often applied in protecting domestic industries against any kind of foreign competition through the use of tariffs, subsidies, import quotas, etc.
A common example of protectionism is simply the Common Agricultural Policy (CAP) of the European Union. The European Union is said to often imposes an amount of tariff rates on a lot of agricultural markets.
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