Define the concepts of trade creation and trade diversion. Explain their role in the context of gains from trade bloc.
Trade creation and trade diversion are key concepts in evaluating the welfare effects of forming a trade bloc such as a customs union or free trade area.
Trade creation arises when, after the bloc is formed, a member country replaces production by a less efficient domestic producer with imports from a more efficient, lower-cost partner within the bloc. Previously, tariffs protected inefficient domestic industries, but with their removal, consumers can source cheaper goods from partner countries. This improves resource allocation, reduces consumer prices, and raises overall welfare by promoting specialization and comparative advantage.
Trade diversion, however, occurs when a member country shifts its imports from a more efficient producer outside the bloc to a less efficient producer within it, simply because of tariff preferences. While the global producer is more efficient, it faces the bloc’s external tariff (in a customs union) or tariffs from the member country (in an FTA), while the less efficient partner does not. This leads to misallocation of resources, higher costs for consumers, and a reduction in welfare.
The net welfare effect of a trade bloc depends on the balance between these two forces. If trade creation dominates, the bloc enhances efficiency and welfare. If trade diversion is substantial, overall welfare may decline, as cheaper global sources are replaced by costlier internal ones.
Thus, trade blocs tend to be more beneficial when they generate significant trade creation with minimal trade diversion, integrating markets while maintaining efficiency.
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Sakshi Negi
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