An increasingly pluralistic United States faced profound domestic and global challenges, debated the proper degree of government activism, and sought to define its international role.
Key Concept 7.1: Growth expanded opportunity, while economic instability led to new efforts to reform U.S. society and its economic system.
Key Concept 7.2: Innovations in communications and technology contributed to the growth of mass culture, while significant changes occurred in internal and international migration patterns.
Key Concept 7.3: Participation in a series of global conflicts propelled the United States into a position of international power while renewing domestic debates over the nation’s proper role in the world.
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