"Everyone knows America is the land of immigrants, but how much do we really know about what drove those migrations in the first place? America: Promised Land uncovers the great forces in history that helped shape the country we live in today. Told primarily through enhanced graphics, this special will follow the migratory journeys of real people in history, revealing surprising and mind-blowing facts along the way. Each chronological hour will focus on a specific theme - Land, War, Opportunity, and Disaster - to tell the story of how the experiences of our ancestors determined how we ended up where we are."