Historical Period
20th century
61
19th century
31
21st century
14
18th century
12
1945-
8
1918-1945
7
2000-
6
1900-1999
3
1990-
3
16th century
2
1810-
2
1830-1915
2
1867-1910
2
1910-1946
2
1917-1970
2
1919-1952
2
1943-1955
2
1945-1964
2
1945-1983
2
1945-1989
2
1946-1970
2
1970-
2
1997-
2
2001-2009
2
Revolution, 1952
2
To 1500
2
Unification, 1990
2
Vietnam War, 1961-1975
2
1585-1656
1
1600-1699
1
1700-1799
1
1745-1808
1
1766-1834
1
17th century
1
1800-1999
1
1819-1900
1
1824-1948
1
1865-1918
1
1895-1970
1
1925-1995
1
1930-2002
1
1939-1945
1
1939-1975
1
1949-1976
1
1965-1975
1
1969-
1
1972-
1
1975-1982
1
1975-1985
1
1976-2000
1
more ...