Era
20th century
20th century --
53
21st century
29
19th century
24
21th century
6
1929-1968
5
18th century
3
1939-1945
3
20th Century
3
1789-1900
2
1917-1963
2
1923-
2
1929 --
2
1939-1945 --
2
1940-
2
1945-1989
2
1973-1993
2
1989-
2
-1999
1
16th-18th centuries
1
1800-1950
1
1861-1912
1
1862-1937
1
1867-1959
1
1877-1915
1
1883-1971
1
1889-1945
1
1892-1950
1
1892-1973
1
1897-1989
1
1898-1979
1
1904-
1
1904-1974
1
1906-1994
1
1911-1976
1
1913-2005
1
1915-1981
1
1917-1948 --
1
1917-2015
1
1927-1959
1
1927-2006
1
1933-1945
1
1933-1945 --
1
1940
1
1942-2016
1
1944-
1
1945
1
1945-
1
1946-
1
1947-
1
more ...