20th century 27
21st century 6
19th century 4
1933-1945 3
1757-1804 2
1918-1945 2
1945- 2
1946- 2
1960- 2
1960-1988 2
1969- 2
1974- 2
1979-1997 2
2016 2
Civil War, 2011- 2
Revolution, 1979 2
1412-1431 1
14th century 1
1593-1652 or 1653 1
1757-1854 1
1760-1849 1
1775-1817 1
1785-1851 1
1809-1849 1
1816-1855 1
1818-1895 1
1846-1847 1
1846-1914 1
1847-1931 1
1847-1944 1
1850-1950 1
1856-1943 1
1861-1930 1
1867-1914 1
1868-1945 1
1870-1940 1
1874-1942 1
1879-1955 1
1889-1945 1
1895-1971 1
1900-1971 1
1906-1945 1
1911-1993 1
1912-1928 1
1912-1949 1
1921-1943 1
1929-1945 1
1929-1968 1
1937- 1
1937-1945 1
1938- 1
1940-2020 1
1941-1974 1
1945-1955 1
1947-2017 1
1949- 1
1949-1976 1
1950- 1
1959- 1
1960-1980 1
1961-1969 1
1961-1974 1
1965- 1
1973- 1
1975- 1
1976- 1
1983- 1
1996- 1
1997- 1
2000 1
2009-2017 1
2017-2021 1
2019 1
2020 1
2021 1
259 B.C.-210 B.C. 1
Bombardment, 1945 1
Civil War, 1861-1865 1
Japanese occupation, 1910-1945 1
Occupation, 1939-1945 1
Qin dynasty, 221-207 B.C. 1
Revolution, 1775-1783 1
Revolution, 1989 1
To 1847 1