Nagy, the communist Premier of Hungary, is ousted for being too moderate. April 18–24 – The Asian-African Conference is held in Bandung, Indonesia. May May 5 – West Germany becomes a sovereign country, recognized by important Western countries such as France, the United Kingdom, Canada and the United States. May 6 – The Western European Union Charter becomes effective. May 7 – Newcastle United F.C. beat Manchester City F.C. 3–1 to win the 1955 FA Cup final. May 9 West Germany joins the North Atlantic Treaty Organization (NATO). A young Jim Henson introduces the earliest version of Kermit the Frog (made in March), in the premiere of his puppet show Sam and Friends, on WRC-TV in Washington, D.C. May 11 – Japanese National Railways' ferry Shiun Maru sinks after a collision with sister ship Uko Maru, in thick fog off Takamatsu, Shikoku, in the Seto Inland Sea of Japan; 166 passengers (many children) and 2 crew members are killed. This event is influential in plans to construct the Akashi Kaikyō Bridge (built 1986–98). May 12 – New York's Third Avenue Elevated runs its last train between Chatham Square in Manhattan and East 149th Street in the Bronx, thus ending elevated train service in Manhattan. May 14 Eight Communist Bloc countries, including the Soviet Union, sign a mutual defence treaty in Warsaw, Poland, that is called the Warsaw Pact (it will be dissolved in 1991). Warrington win the British Rugby League Championship title for the third time; they will not win it again within the following 60 years. May 15 The Austrian State Treaty, which restores Austria's national sovereignty, is concluded between the 4 occupying powers following World War II (the United Kingdom, the United States, the Soviet Union, and France) and Austria, setting it up as a neutral country. Lionel Terray and Jean Couzy become the first people to reach the summit of Makalu, the fifth-highest mountain in the world, on the 1955 French Makalu expedition. The entire team of climbers reaches the summit over the next two days. May 18 – Free movement of residents between North and South Vietnam ends. May 25 – Joe Brown and George Band are the first to reach the summit of Kangchenjunga in the Himalayas, as part of the British Kangchenjunga expedition led by Charles Evans. June June 7 – The television quiz program The $64,000 Question premieres on CBS-TV in the United