Era
Revolution, 1917-1921
1917-1921
35
1917 - 1921
28
20th century
5
1917-
4
Allied intervention, 1918-1920
3
February Revolution, 1917
3
Revolution, 1905-1907
3
1801-1917
2
1870-1924
2
1900-1999
2
1905-1907
2
1917-1936
2
1896-
1
1896-1991
1
1900 - 1999
1
1904-1914
1
1905-1921
1
1917-1991
1
Revolution , 1917-1921
1