Two foreign nations decided to impose tariffs on imports from all countries. They set up a free trade area, removing all trade barriers between themselves but maintaining tariffs on imports from the rest of the world. Country A now begins to import sugar from Country B. Prior to this, Country A was producing sugar at a higher cost so it now benefits from this transaction. This is an example of

customs union

Explanation:

The arrangements between the two countries is called a customs union. In a customs union agreement, the member countries apply common external trade policies with the rest of the world while ensuring free trade and common tarrif amongst themselves. This is a partial form of economic integration that aims to boost economic progress among countries while also strengthening political and cultural ties among them

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