20th century 55
2001- 24
21st century 24
1945-1989 17
19th century 13
1945- 12
1989- 10
2001 10
1933-1945 9
1989 9
Civil War, 1861-1865 8
Revolution, 1775-1783 5
18th century 4
1945 4
1945-1953 4
1946- 4
1961-1963 4
1993 4
1993-2001 4
1953-1961 3
1961-1969 3
1963-1969 3
1969-1974 3
1980- 3
1991- 3
1775-1783 2
1861-1865 2
1917-1963 2
1918-1945 2
1923- 2
1950 - 1953 2
1960-1980 2
1993- 2
2001-2009 2
2008 2
1789-1815 1
1809-1865 1
1815-1861 1
1862-1865 1
1884-1972 1
1890-1969 1
1905- 1
1908-1957 1
1918-1932 1
1919-1933 1
1925- 1
1929 1
1931- 1
1932- 1
1939 - 1945 1
1939-1945 1
1941-1979 1
1942-1945 1
1945-1948 1
1945-1955 1
1945-1989.+ 1
1945-1990 1
1945-1991 1
1946 1
1949- 1
1961-1975 1
1962- 1
1969- 1
1971 1
1971- 1
1974-1977 1
1975-1985 1
1976- 1
1977-1981 1
1980 1
1981 1
1981- 1
1981-2001 1
1982- 1
1982-1984 1
1985-1990 1
1993 - 2001 1
1995-2005 1
1996 1
2000 1
2003- 1
2009 1
Arab-Israeli conflict 1
Colonial period 1
Colonial period, ca. 1600-1775 1
History 1
Persian Gulf War, 1991 1
To 1775 1
To 1900 1
United States 1
Vietnamese Conflict, 1961-1975 1
World War, 1914-1918 1