Final answer:
Countries worldwide are concerned about the health and stability of the U.S. economy due to its significant global economic impact.
Explanation:
The health and stability of the U.S. economy are major concerns for countries around the world for several reasons:
- The United States has the world's largest economy by a significant margin, making its economic performance crucial globally.
- The U.S. trade deficits and inflows of foreign capital, coupled with its influence in global economic institutions, impact international economies.
- Economic prosperity is a central component of foreign policy, which relies on a strong economy for global influence and military presence.
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