Era
20th century
23
21st century
19
1939-1945
12
20th century --
8
19th century
6
1925-
4
1914-1918
3
21st century --
2
1728-1792
1
1883-1971
1
18th century --
1
1917-1963
1
1926-1962
1
1933-1945
1
1940-
1
1940-2005
1
1943-
1
1945-1989
1
1946-
1
1950s-2009
1
1954-1966
1
1957
1
1957-
1
1959
1
1971
1
1972
1
1975-
1
1976-2000
1
1976-2002
1
1989
1
19th century --
1
2000 -
1
2002-
1
2009-
1
20th Century
1
20th centurt
1
21st Century
1
Malayan emergency, 1948-1960
1
Primitive and early church, ca. 30-60s
1