Era
20th century
15
1918-1945
5
19th century
5
18th century
3
1945-
3
16th century
2
17th century
2
1815-1870
2
1878-1953
2
1917-1936
2
1933-1945
2
British occupation, 1765-1947
2
Nicholas II, 1894-1917
2
Revolution, 1917-1921
2
1457-1509
1
1485-1603
1
1515-1547
1
1516-1558
1
1558-1603
1
1603-1625
1
1648-1714
1
1660-1688
1
1672-1725
1
1760-1860
1
1769-1821
1
1783-1865
1
1788-1850
1
1789-1815
1
1789-1820
1
1789-1900
1
1792-1835
1
1800-1837
1
1801-1917
1
1806-1815
1
1815-1898
1
1835-1848
1
1836-1914
1
1848-1849
1
1848-1867
1
1857-1919
1
1861-1912
1
1867-1918
1
1871-1918
1
1879-1940
1
1883-1945
1
1883-1967
1
1884-1918
1
1894-1917
1
1894-1971
1
1910-1936
1
more ...