context: During the Cold War, a principal focus of Canadian defence policy was contributing to the security of Europe in the face of the Soviet military threat. Toward that end, Canadian ground and air forces were based in Europe from the early 1950s until the early 1990s.
question: ఏ సంవత్సరం నుండి సి. ఎ. ఎఫ్. ఐరోపాలో స్థిరపడింది?
answers: the early 1950s