sentences:  On 6 September 1973, the Republic of Vietnam's Ministry of the Interior signed Decree No.420-BNV/HCĐP/26 merging some Spratly islands, including Namyit, into Phuoc Hai Commune, Dat Do District, Phuoc Tuy Province.South Vietnam continued to administer the entity until 27 April 1975 when their troops were evicted by the Vietnam People's Army.