Canada goes to considerable lengths to protect its television program and magazine producers from U. S. competitors. The United States often seeks protection from food imports from Canada. From an economywide viewpoint, these efforts are

misguided because the enhanced output from specialization based upon comparative advantage is restricted.

Explanation:

Both countries would have benefited from trading in what the goods they have comparative advantage. Canada would have benefited from the U.S television and magazine programs, while the U.S would have gained by allowing food imports from canada.Goin by the by the theory of comparative advantage, each country benefits by exchanging those goods they have comparative advantage.

answer: b) the us is the leading importer but not the leading exporter.

extra info:

the u.s is the largest importer but it is not the largest exporter as china sits on the top of the table when it comes to leading exporters.

but u.s is not far from first,

they rank in 2nd globally as the worlds largest exporter.

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these are the four factors that influence enterpreneurship development

1. economic development

2. culture

3.technological development

4. education