Era
20th century
75
19th century
31
1900-1999
20
18th century
19
21st century
19
Since 1900
13
17th century
12
1945-1989
9
1951-
9
1990-
6
1999-
6
2000-2099
6
Revolution, 1910-1920
6
Since 1999
6
1800-1899
5
1945-
5
To 1500
5
1421-1737
4
1775-1783
4
1865-1933
4
1910-1946
4
1949-
4
1989-
4
To 1421
4
To 146 B.C.
4
1485-
3
1603-1714
3
1861-1865
3
1900-2099
3
1991-
3
Revolution, 1789-1799
3
To 1737
3
To 1775
3
To 1865
3
To 1898
3
To 1899
3
1420-1798
2
1485-1603
2
16th century
2
1789-1799
2
1789-1820
2
1815-1861
2
1824-1920
2
1832-1886
2
1841-1845
2
1845-1861
2
1870-1924
2
1878-1953
2
1878-1967
2
1887-1940
2
more ...