Era
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1960
4
1966-1998
4
1969-
4
1991
4
1993-
4
2001-2009
4
2020
4
Appropriations and expenditures, 2018
4
German occupation, 1941-1944
4
Israeli intervention, 1982-1985
4
Revolution, 1964
4
Since 2000
4
To 1900
4
Vietnam War, 1961-1975
4
1600-1699
3
1649-1660
3
1800 - 1899
3
1890-1969
3
1910-1946
3
1933-1982
3
1934-1986
3
1945-1953
3
1945-1960
3
1945-1990
3
1950-1953
3
1953-1985
3
1955-1983
3
1959-
3
1959-1990
3
1960-1997
3
1961-
3
1961-1975
3
1968-1980
3
1975-1985
3
1981-1989
3
1985-
3
1991-2003
3
1997-
3
1998-
3
2002-
3
2019
3
American occupation, 1915-1934
3
Korean War, 1950-1953
3
Mau Mau Emergency, 1952-1960
3
Since 1948
3
War of 1689-1691
3
1609-1680
2
16th century
2
1700-1799
2
1732-1799
2
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