Era
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1915-2005
2
1917-2011
1
1918
1
1918-1932
1
1918-1945
1
1920-1955
1
1920-1985
1
1920-2012
2
1921-1930
2
1928-2016
1
1931-1940
3
1932-2020
1
1933-1945
1
1940-1980
1
1940-2007
1
1941-1950
2
1945-
1
1951-1960
2
1956-
1
1957-
1
1960-
1
19th century
34
2000-2099
3
20th century
80
21st century
4
Civil War, 1861-1865
1
Geschichte 1858-1938
1
Geschichte 1910-1919
1
Louis Philippe, 1830-1848
1
Since 1865
1
Since 1933
1
To 1901
1
To 1921
1
To 1931
2
To 1961
2