Part one 1900 -- 1920 -- The first generation -- Communities 1900 -- 1920 -- The new century -- Becoming a world power -- Part two 1920 -- 1945 -- The second generation -- Prosperity and modernity 1920 -- 1932 -- A new deal -- Communities 1920 -- 1940 -- Waging world war II -- Part three 1945 -- The third generation -- The new industrial society -- It's a small world after all -- American communities after World War II.