The examples provided in the question can best be explained by the economic principle of comparative advantage.
Comparative advantage refers to the ability of a country to produce goods or services at a lower opportunity cost than another country. In this case, Chile has a comparative advantage in the production of certain fruits (like grapes and strawberries) due to its favorable climate and longer growing season, while the United States has a comparative advantage in manufacturing durable goods due to its larger manufacturing capacity. This leads to trade where each country specializes in products that they can produce more efficiently.