Era
1894-1917
78
1801-1917
73
19th century
43
20th century
34
1689-1801
20
1953-1985
19
1985-1991
19
1855-1881
17
1904-1914
16
1917-1936
15
Revolution, 1917-1921
15
1991-
14
1870-1924
13
1800-1917
11
Since 1991
10
Nicholas II, 1894-1917
9
1871-1918
8
21st century
8
1613-1689
7
1861-1917
7
1881-1894
7
1894-1999
7
1900-1999
7
1945-
7
Revolution, 1905-1907
7
1533-1613
6
1800-1899
6
1801-1999
6
1672-1725
5
17th century
5
1825-1855
5
1868-1918
5
18th century
5
1989-
5
1952-
4
To 1533
4
To 1867
4
1689-1917
3
16th century
3
1789-1900
3
1849-1915
3
1917-
3
1945-1989
3
1971-
3
Catherine II, 1762-1796
3
February Revolution, 1917
3
1600-1699
2
1745-1819
2
1775-1917
2
1796-1918
2
more ...