Postage stamps and postal history of Singapore British colonial rule, Singapore grew in importance rapidly becoming a major port city. During World War II, Singapore was occupied by Japan from 1942 to 1945. After the war, Singapore reverted to British control, with increasing levels of self-government being granted, culminating in Singapore's merger with the Federation of Malaya to form Malaysia in 1963. Singapore became an independent republic on 9 August 1965. Singapore was originally part of the Straits Settlements and used the colony's stamps. During World War II, Singapore was occupied by the Japanese between 1942 and 1945. After the surrender of the Japanese Occupation forces at
War crimes in occupied Poland during World War II at Chełmno according to postwar verdict by West Germany, although up to 340,000 victims were estimated by the Polish Main Commission for Investigation of German Crimes in Poland (GKBZNwP), a predecessor of the Institute of National Remembrance. Following the Wannsee Conference of 1942, as part of highly secretive Operation Reinhard in occupied Poland, the German government built three regular killing centres with stationary gas chambers. It was the most deadly phase of the Final Solution, based on implementing semi-industrial means of killing and incinerating people. The new facilities included Treblinka extermination camp (set up in July 1942), Bełżec (March 1942),