Historical Period
20th century
87
21st century
21
19th century
6
1882-1941
5
1901-1981
4
1980-
4
1945-
3
1990-
3
Siege, 586 B.C.
3
1564-1616
2
1899-1973
2
1925-1995
2
1936-2005
2
1946-
2
1955-
2
Civil War, 1861-1865
2
Civil War, 1989-1996
2
Civil War, 1999-2003
2
1848-1917
1
1874-1946
1
1885-1930
1
1886-1961
1
1886-1967
1
1888-1965
1
1900-1999
1
1908-1990
1
1939-1975
1
1944-2001
1
1953-
1
1960-
1
1969-
1
1975-
1
1977-
1
1980-2020
1
1983-
1
1986-
1
Civil War, 1975-1990
1
Civil War, 1979-1992
1
Dirty War, 1976-1983
1
Qing dynasty, 1644-1912
1
Revolution, 1954-1962
1