Era
20th century
14
1945-
11
1945-1989
6
21st century
5
18th century
3
1933-1945
3
1936-1945
3
1985-1991
3
1989-
3
1990-
3
1993-
3
19th century
3
1644-1912
2
1874-1965
2
1889-1945
2
1917-1945
2
1917-1948
2
1918-1933
2
1945-1991
2
1949-1976
2
1960-
2
1976-
2
1985-
2
1991-
2
Civil War, 1936-1939
2
Civil War, 1990-1993
2
Civil War, 1994
2
Ming dynasty, 1368-1644
2
To 1912
2
1371-1435
1
1444-1863
1
1453-1683
1
1556-1648
1
1572-1763
1
1599-1658
1
1603-1625
1
1649-1660
1
1683-1829
1
1727-1760
1
1794-1858
1
1795-1861
1
1802-1894
1
1814-1888
1
1815-1898
1
1820-1895
1
1830-1878
1
1830-1898
1
1832-1898
1
1849-1853
1
1849-1861
1
more ...