Era
20th century
72
19th century
20
1945-
8
18th century
6
1918-1933
6
1990-
5
German occupation, 1940-1945
5
1871-1918
4
1933-1945
4
1989-
3
21st century
3
1789-1900
2
1867-1918
2
1914-1940
2
1945-1989
2
Unification, 1990
2
1668-1744
1
16th century
1
17th century
1
1802-1876
1
1804-1876
1
1815-1866
1
1815-1870
1
1815-1898
1
1844-1923
1
1866-1871
1
1866-1938
1
1870-1940
1
1871-1919
1
1873-1947
1
1884-1960
1
1889-1945
1
1890-1945
1
1891-1937
1
1892-1940
1
1894-1961
1
1896-1975
1
1908-
1
1908-1986
1
1913-1994
1
1914-1945
1
1917-1945
1
1918-1938
1
1918-1945
1
1919-1987
1
1929
1
1938-
1
1940-1945
1
1942-
1
1943-
1
more ...