In That Used To Be Us: How America fell behind in the world it invented and how we can come back aga

In That Used To Be Us: How America fell behind in the world it invented and how we can come back again , Friedman and Mandelbaum offer four key challenges for the U.S. What are they and what are the “holes” in their logic of importance! Be sure you provide not only Friedman and Mandelbaum’s textbook reasons for importance but research and examples that supports/refutes their positions