Era
1939-1945
21
20th century
13
1900-1999
6
Revolution, 1917-1921
6
1939 - 1945
5
1961-1975
5
19th century
5
2011
4
1900 - 1999
3
1915-
3
2003-2011
3
21st century
3
Civil War, 1861-1865
3
-1889
2
1859-1930
2
1861 - 1865
2
18th century
2
1902-1976
2
1906-
2
1919-2016
2
1939-
2
1955-
2
1957-2011
2
Cultural Revolution, 1966-1976
2
Sepoy Rebellion, 1857-1858
2
Since 2001
2
War of 1812
2
1516-1830
1
1700-1899
1
1738-1828
1
1775 - 1783
1
1775-1783
1
1779-1862
1
1800 - 1999
1
1812 - 1815
1
1812-1815
1
1826-1896
1
1828-1910
1
1840-1911
1
1846-1865
1
1849-1922
1
1853-1856
1
1861-1865
1
1865-1918
1
1887-1957
1
1893-1968
1
1898-1918
1
1900 - 2099
1
1902-
1
1903-
1
more ...