In the past decade, economic chaos, the War on Terror, climate change, nuclear proliferation, political divisions, and a variety of other issues have caused tension among nations and within the United States. Although America stood alone as the world's only superpower at the turn of the century, many question whether it can maintain its influential role on the global stage. America's Role in a Changing World discusses the economic, social, political, and historical forces that have shaped the country to provide an understanding of the challenges the country faces today and in the future.