Bien Phu, the climactic battle of the First Indochina War. March 19 – Joey Giardello knocks out Willie Tory at Madison Square Garden in the first televised boxing prize fight to be shown in colour. March 23 – In Vietnam, the Viet Minh capture the main airstrip of Dien Bien Phu. The remaining French Army units there are partially isolated. March 25 The 26th Academy Awards Ceremony is held. The Soviet Union recognises the sovereignty of East Germany. Soviet troops remain in the country. March 27 – The Castle Romeo nuclear test explosion is executed at Bikini Atoll, in the Marshall Islands. March 28 The trial of A. L. Zissu and 12 other Zionist leaders ends with harsh sentences in Communist Romania. Puerto Rico's first television station, WKAQ-TV, commences broadcasting. March 29 – A C-47 transport with French nurse Geneviève de Galard on board is wrecked on the runway at Dien Bien Phu. March 30 – The first operational subway line in Canada opens in Toronto. April April 1 The U.S. Congress and President Dwight D. Eisenhower authorize the founding of the United States Air Force Academy in Colorado. South Point School in India is founded, and becomes the largest school in the world by 1992. April 3 – Petrov Affair: Diplomat Vladimir Petrov defects from the Soviet Union and asks for political asylum in Australia. April 4 – Legendary symphony conductor Arturo Toscanini experiences a lapse of memory during a concert. At this concert's end, his retirement is announced, and he never conducts in public again. April 7 – Dwight D. Eisenhower gives his "domino theory" speech, during a news conference. April 8 – A Royal Canadian Air Force Canadair Harvard collides with a Trans-Canada Air Lines Canadair North Star over Moose Jaw, Saskatchewan, killing 37 people. April 11 This day is denoted as the most boring day in the 20th century by True Knowledge, an answer engine developed by William Tunstall-Pedoe. No significant newsworthy events, births, or deaths are known to have happened on this day. In a general election in Belgium, the dominant Christian Social Party wins 95 of the 212 seats in the Chamber of Representatives, and 49 of the 106 seats in the Senate. The government led by Jean Van Houtte loses their majority in parliament. The two other main parties, the Socialist and Liberal Party, subsequently form a rare "purple" government, with Achille Van