20th century 399 19th century 159 21st century 124 18th century 51 To 1500 34 17th century 33 Civil War, 1861-1865 29 1933-1945 22 16th century 21 Revolution, 1775-1783 17 1945-1989 14 Charles II, 1660-1685 14 20th Century 12 1945- 11 1900-1999 10 Colonial period, ca. 1600-1775 10 1861-1865 9 1918-1945 9 1989- 8 2017-2021 8 Revolution, 1789-1799 8 1660-1685 7 1809-1865 7 1991- 7 1801-1917 6 1919-1933 6 Civil War, 1936-1939 6 German occupation, 1940-1945 6 Medieval, 500-1500 6 Ottoman Empire, 1288-1918 6 Revolution, 1917-1921 6 1800-1899 5 1815-1861 5 1818-1895 5 1889-1945 5 1917-1936 5 1961-1969 5 Civil War, 1642-1649 5 1660 - 1688 4 1660-1688 4 1732-1799 4 1775-1783 4 1775-1865 4 1839-1876 4 1856-1924 4 1877-1964 4 1912-1945 4 1929-1968 4 1939-1945 4 1945-1990 4 1949-1976 4 1990- 4 2000- 4 2000-2099 4 British occupation, 1765-1947 4 Henry VIII, 1509-1547 4 Revolution, 1910-1920 4 To 146 B.C. 4 Tudors, 1485-1603 4 1485?-1540 3 1533-1603 3 1564-1616 3 1600-1699 3 1642-1649 3 1648-1715 3 168 B.C.-135 A.D. 3 1743-1826 3 1757-1834 3 1789-1900 3 1865-1921 3 1865-1950 3 1874-1965 3 1901-1953 3 1914-1945 3 1929 3 1936-1953 3 1942- 3 1949- 3 1959- 3 1974- 3 1980- 3 1985- 3 1992- 3 2009-2017 3 Civil War, 1945-1949 3 Civil War, 2011- 3 Cultural Revolution, 1966-1976 3 George I, 1714-1727 3 Nicholas II, 1894-1917 3 Opium War, 1840-1842 3 Partition, 1947 3 Protests, 2011-2013 3 Revolution of 1688 3 Spartan and Theban Supremacies, 404-362 B.C. 3 War of 1812 3 1066-1485 2 1421-1737 2 1491-1547 2 14th century 2 1564-1642 2