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 Adriatic Sea Coast in the Albanian Adriatic coast, is very picturesque and harbors several endangered species, that makes it a very popular place indeed. Encompassing the Drin River estuary, the Kunë-Vain-Tale Nature Park is an undisturbed natural area of wet grasslands, swamps and lagoons at the direct proximity to the Adriatic Sea. The Vjosa, which is considered to be Europe's last wild river, discharges, north of Narta, into the Adriatic Sea, where it forms the Vjosa-Narta Protected Landscape. Both, the Karavasta Lagoon and Lake Shkodër, are classified as wetlands of international importance by designation under the Ramsar Convention. Important Bird Areas are important