Era
Revolution, 1917-1921
1917-1921
51
1917 - 1921
34
1917-1936
6
Allied intervention, 1918-1920
5
1896-
4
1896-1991
4
1870-1924
3
20th century
3
Revolution, 1905-1907
3
1801-1917
2
1905-1907
2
1917 - 1936
2
1917-
2
1917-1991
2
1900-1999
1
1905 - 1921
1
1905-1921
1
1910-1920
1
1914-1921
1
1918-1920
1
February Revolution, 1917
1
Nicholas II, 1894-1917
1
Revolution , 1917-1921
1
Revolution, 1917-
1
Since 1914
1