Era
20th century
12
1933-1945
4
1936-1945
3
2001-
3
2009-
3
1837-1901
2
1901-1910
2
1914-1940
2
1926-1945
2
1945-
2
1946-
2
1991-
2
19th century
2
1508-1797
1
1868-1912
1
1868-1945
1
1871-1918
1
1872-1958
1
1889-1945
1
1890-1970
1
1910-1921
1
1912-1945
1
1917-1963
1
1924-
1
1945-1990
1
1953-
1
1961-1963
1
1974-
1
1980-
1
1989-
1
1997-
1
21st century
1
697-1508
1
Blockade, 1948-1949
1
Civil War, 1994-
1
Civil War, 1998-
1
German occupation, 1941-1944
1
Invasion, 1961
1
Ming dynasty, 1368-1644
1
Opium War, 1840-1842
1
Soviet occupation, 1979-1989
1