America: The Story of the US S1, E4

Why did the United States become a global superpower? America The Story of Us is an epic 12-hour television event that explores the country's remarkable journey.

Cast:Daniel Webb , Liev Schreiber , Tom Brokaw , James Meigs , H.W. Brands , Annette Gordon-Reed , Brian Williams , Michael Douglas , Colin Powell , Rudy Giuliani , Richard Machowicz , Al Sharpton , Michael Strahan , John Lasseter , David Baldacci , Jeannette Walls , Donald Trump , Henry Louis Gates Jr.