Era
1945-1989
37
20th century
21
1939-1945
20
19th century
15
active 12th century-13th century
14
1900-1999
13
21st century
11
1800-1899
10
1867-1918
10
Revolution, 1917-1921
10
1918-1945
9
Revolution, 1956
9
Revolution, 1918-1919
8
1989-
7
975?-1038
7
13th century
5
1433?-1457
5
1912-1947
5
1945 - 1989
5
1945-
5
2000-2099
5
Uprising of 1848-1849
5
1792-1830
4
1878-1953
4
1933-1945
4
12th/13th cent
3
1443-1490
3
1848-1849
3
1903-1989
3
1913-1945
3
1930-
3
1961-1975
3
Since 1945
3
1452-1498
2
1510?-1579
2
1575?-1642?
2
1625-1659
2
1676-1735
2
1717-1780
2
1755-1795
2
1756-1791
2
1800 - 1899
2
1800-1855
2
1818-1916
2
1823-1864
2
1825-1904
2
1832-1888
2
1858-1889
2
1864-1913
2
1878-1952
2
more ...