This comprehensive 15-part retrospective, anchored by Peter Jennings, takes an era-by-era look at America's evolution during the turbulent 20th century.

Peter Jennings hosts this 15 part documentary that chronicles the defining events of the 20th century. Through archive footage and hundreds of interviews the series examines 100 years of American history from the influx of immigrants in 1900 to the late 90s explosion of technology and mass communication.—Jerry Roberts