Era
20th century
95
19th century
52
Civil War, 1861-1865
32
1939-1945
29
18th century
25
1564-1616
24
1750-1825
18
1756-1791
18
1900-1999
16
1800-1899
14
1933-1945
14
1947-
14
Revolution, 1917-1921
12
1914-1918
11
1760-
10
21st century
10
Revolution, 1789-1799
10
1754-1817
9
1763-1842
9
1764-1793
9
1915-1985
9
1929
9
1961-1970
9
1892-1977
8
1944-
8
1977-
8
Richard I, 1189-1199
8
1899-1961
7
1909-1934
7
1910-1934
7
1911-1983
7
1925-1965
7
1926-2016
7
1930-
7
Revolution, 1905-1907
7
Tiberius, 14-37
7
1700-1799
6
1775-1865
6
1850-1894
6
1856-1919
6
1866-1946
6
1869-1946
6
1873-1954
6
1889-1945
6
1894-1961
6
1896-1940
6
1915-1963
6
1917-1963
6
1920-1955
6
1948-
6
more ...