Period 1 (1491-1607)
Period 2 (1607-1754)
Period 3 (1754-1800)
Period 4 (1800-1848)
Period 5 (1844-1877)
Period 6 (1865-1898)
Period 7 (1890-1945)
Period 8 (1945-1980)
Period 9 (1980-present)
Concept Outline - College Board