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
Albanian Ionian Sea Coast to the mountainous terrain of the country, the western lowlands consists mostly of coastal lowlands and plains. The Albanian Ionian Sea Coast is known for its rugged natural beauty, with rocky highlands and a great marine life, while the Albanian Adriatic Sea Coast consist of sandy beaches and shallow coastal waters. The coastline covers an extensive part of the Ceraunian Mountains, which extends parallel immediately along the Ionian Sea, starting at Sarandë, running for over 100 kilometers in a southeast-northwest direction along the Albanian Riviera, to Orikum. The mountainous interior is fragmented into several massifs often reaching 2,000 metres above