Bulgaria–United States relations to work. Bulgaria became a member of the Warsaw Pact on May 14, 1955. Though no Soviet troops were stationed on Bulgarian soil, in 1968, Zhivkov sent a Bulgarian division to join Polish, Hungarian and Soviet troops to crush a popular uprising in Prague. In 1978, the Bulgarian secret police were implicated in the assassination in London of Georgi Markov, a Bulgarian dissident who was a correspondent for the BBC World Service, Deutsche Welle radio and the U.S. sponsored Radio Free Europe. Markov was assassinated with a poisoned umbrella on September 7, Zhivkov's birthday. The rise of democratic movements across
London Waterloo station was officially renamed Waterloo, reflecting long-standing common usage, even in some L&SWR timetables. The L&SWR's aim throughout much of the 19th century was to extend its main line eastward beyond Waterloo into the City of London. Given this, it was reluctant to construct a dedicated grand terminus at Waterloo. Consequently, Waterloo had none of the usual facilities expected of a terminus until 1853, when a small block was built on the far east side of the station. In 1854, the London Necropolis & National Mausoleum Company opened a private station inside Waterloo that provided services to Brookwood Cemetery. The station