Timeline of Albanian history to 1993 cooperation signed with Yugoslavia; Yugoslav advisers and grain begin pouring into Albania. October<br> 26 October: Two British ships destroyed by mines off Albania's coast in the Straits of Corfu, see Corfu Channel Incident, . November<br> Albania breaks diplomatic relations with the United States after the latter withdraws its informal mission. 1947 April May<br> A United Nations commission concludes that Albania, together with Bulgaria and Yugoslavia, supported communist guerrillas in the Greek Civil War; Yugoslav leaders launch verbal offensive against anti-Yugoslav Albanian communists, including Hoxha; pro-Yugoslav faction begins to wield power. July<br> Albania refuses participation in the Marshall Plan of the
Society for the Publication of Albanian Writings and in German in Berlin thanks to the Ottoman consul in Paris. The volume was later on translated into Albanian, Ottoman Turkish and Greek and finally into Arabic (1884) and Italian (1916). <br>In the summer of 1881, Jani Vreto opened in Bucharest the Romanian branch of the society. The Egyptian branch was founded by Spiro Dine from the town of Vithkuq near Korçë, in Shibin Al Kawm, during 1881 as well. <br>After its activities were banned, the society transferred in Bucharest were many publications in Albanian language were to follow in so called "Instambul Alphabet" (see Albanian Alphabet). It was