Era
20th century
198
1939-1945
171
1900-1999
89
1939 - 1945
53
19th century
36
1933-1945
20
Civil War, 1861-1865
18
1925-1953
11
1800-1899
10
2001-2009
10
1911-1979
9
1929-
8
21st century
8
1900 - 1999
7
1938-
7
18th century
6
1918-
6
1949-1976
6
German occupation, 1940-1945
6
1902-1968
5
1930-
5
1941-
5
1993-
5
Occupation, 1939-1945
5
1800-1999
4
1914-1918
4
1918-1945
4
1923-
4
1926-
4
1928-2016
4
1931-
4
1953-1985
4
Revolution, 1775-1783
4
1859-1925
3
1909-2001
3
1914-1992
3
1916-1944
3
1918-2008
3
1919-1987
3
1920-
3
1922-
3
1922-1951
3
1925-2015
3
1927-
3
1959-
3
1975-
3
1975-1979
3
20e siècle
3
Antirightist Campaign, 1957-1958
3
Japanese occupation, 1942-1945
3
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