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
Autonomous Albanian Republic of Korçë new authorities introduced Albanian and French as the official language and replaced Greek schools with Albanian ones, which were forbidden during the Greek administration of the city. There was also a French school in Korçë and one of its many students was Enver Hoxha, who was an apprentice (1927—1930) and then teacher (1937—1939) there. He would later become the First Secretary of the Albanian Party of Labour, serving from 1941 until his death in 1985. The Republic of Korçë was established in 1916 during World War I. The Austro-Hungarian army invaded northern Albania in the spring of 1916, the Kingdom