Era
20th century
31
19th century
19
1900-1999
10
1939-1945
6
21st century
6
1800-1899
5
17th century
3
1865-1955
3
1932-2003
3
1933-1945
3
1946-
3
1949-
3
1981-1990
3
2000-2099
3
1775-1817
2
1832-1888
2
18th century
2
1914-1970
2
1944-
2
1947-
2
1948-
2
1952-
2
1957-
2
1960-1980
2
1964-1995
2
1969-
2
1978-
2
1980-
2
Colonial period, ca. 1600-1775
2
German occupation, 1940-1945
2
-1999
1
12th century
1
1600-1775
1
1626-1696
1
1700 - 1799
1
1700-1799
1
1819-1901
1
1840-1901
1
1850-1950
1
1865-1918
1
1867-1918
1
1867-1919
1
1867-1934
1
1867-1957
1
1871-1918
1
1873-1954
1
1874-1942
1
1876-1916
1
1882-1941
1
1883-1966
1
more ...