Era
20th century
33
21st century
15
19th century
5
1900-1999
3
1644-1912
1
1737-1806
1
1781-1859
1
1789-1820
1
1890-1962
1
1893-1976
1
18th century
1
1910-1936
1
1918-1945
1
1921-1944
1
1925-1953
1
1928-
1
1945-
1
1945-1953
1
1945-1964
1
1946-
1
1947-
1
1949-1976
1
1971-
1
1976-
1
1997-
1
2017-
1
2017-2021
1
Civil War, 2011-
1
Cultural Revolution, 1966-1976
1
Revolution, 1789-1799
1
Revolution, 1954-1962
1
Since 2000
1
To 1957
1
active 6th century
1