Final answer:
The additional gains from free trade argument highlight the economic benefits of international trade, including increased productivity and the standard of living, improved availability of products, and transfer of knowledge.
Step-by-step explanation:
The additional gains from free trade argument highlight several benefits of international trade. Firstly, the economic gains from expanding international trade are significant, reaching billions and possibly even trillions of dollars. This leads to an increase in productivity and the average standard of living for all countries.
Secondly, the gains from trade are not merely one-time events, but rather persist each year into the future. The potential advantages for consumers include having a variety of products available and increased competition among producers, leading to better and less expensive products.
Lastly, trade between countries often involves a transfer of knowledge in various fields like production, technology, management, finance, and law. This transfer of knowledge contributes to the overall gains and development resulting from free trade.