In the second program in ON THE ROAD IN AMERICA, titled PACK UP YOUR TROUBLES, Burt continues the story. This time it's around the theme of wars and crisis, covering the two world wars and the depression. Wars often move people around. The labor force demands of WWI accelerated the move from farms to cities and initiated the Great Migration out of the South. The Depression slowed migration as worried people stayed close to home. The Dust Bowl migration, driven by environmental as well as an economic crisis, was the memorable exception.