20th century 20
1945-1989 7
Civil War, 1861-1865 5
19th century 4
21st century 4
Revolution, 1775-1783 4
1564-1616 2
1821-1912 2
1927-2019 2
-1400 1
1688-1744 1
1756-1791 1
1770-1850 1
1785-1851 1
1788-1824 1
1804-1857 1
1809-1892 1
1812-1870 1
1819-1880 1
1819-1900 1
1831-1881 1
1838-1914 1
1850-1894 1
1867-1912 1
1871-1948 1
1876-1941 1
1878-1912 1
1882-1941 1
1885-1930 1
18th century 1
1900-1999 (20th century) 1
1912-1944 1
1915-1998 1
1920-1955 1
1937- 1
1944-1990 1
1949- 1
1951- 1
1959-1990 1
1990- 1
Athenian supremacy, 479-431 B.C. 1
Early modern, 1500-1700 1
Holocene 1
Kings, 753-510 B.C. 1
Peloponnesian War, 431-404 B.C. 1
Republic, 265-30 B.C. 1
Republic, 510-265 B.C. 1
To 1200 B.C. 1