Unit 1 - A New Nation (1760-1790)
Unit 2 - A Nation Divided (1800-1880)
Unit 3 - A Nation Transformed (1870-1910)
Unit 4 - A Nation at War (1890-1920)
Unit 5 - A Modern Nation (1920-1950's)
Unit 6 - A Global Nation (1945-1990's)