Era
20th century
151
1945-
64
Since 1900
33
1900-1999
25
1918-1945
20
19th century
20
1970-
19
1980-
10
1865-1918
9
1945-1989
9
1783-1865
8
Civil War, 1861-1865
8
21st century
7
1971-
6
18th century
5
1989-
5
1926-1945
4
1800-1899
3
1861-1865
3
1912-1926
3
1919-1933
3
1929
3
1945-1970
3
1953-1961
3
1960-1980
3
Geschichte
3
Revolution, 1775-1783
3
Since 1945
3
Since 1970
3
1564-1616
2
16th century
2
17th century
2
1800-1999
2
1812-1870
2
1865-1950
2
1896-1976
2
1918-1932
2
1933-1945
2
1971-1981
2
1981-1989
2
1981-2001
2
2000-2099
2
Republic, 1836-1846
2
Revolution, 1835-1836
2
Victoria, 1837-1901
2
1500-1699
1
1700-1799
1
1700-1899
1
1775-1865
1
1775-1899
1
more ...