Indochina -1951 French Union (1946-) 1951 kingdom (1953-) 1957 1957 1960 1961 Khmere republic (1970-1975) 1971 1974 1974 1974 1974 fall of Khmere Rouge 1980 peoples republic Kampuchea (1979-) 1984 1985 1985 1986 UN trusteeship (1989-) 1990 kingdom (1993-) 1999 1999 1999 1999 1999 1999 1999 2001