The issue of the status of Trieste was finally settled with the Treaty of Osimo, signed on 10 November 1975 by the Socialist Federal Republic of Yugoslavia and the Italian Republic in Osimo, Italy, to definitely divide the Free Territory of Trieste between the two states. The treaty was written in French and became effective on 11 October 1977. It was based on the memorandum of understanding signed in London in 1954, which had handed over the provisional civil administration [citation needed] of Zone A to Italy and Zone B to Yugoslavia.