Why wouldn’t the purchase of the most advanced technology necessarily provide a nation with a comparative advantage relative to other nations?

In economic terms, a country has a comparative advantage when it can produce at a lower opportunity cost than that of trade partners. While a country cannot have a comparative advantage in all goods and services, it can have an absolute advantage in producing all goods.

One factor in America's comparative advantages is its vast landmass bordered by two oceans. It also has lots of fresh water, arable land, and available oil. U.S. businesses benefit from cheap natural resources and protection from a land invasion.

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