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
Waterloo, London "For a list of street names etymologies in the area see: Street names of Waterloo" Waterloo is connected to the Strand area on the north bank of the River Thames by Waterloo Bridge. The first bridge on the site was opened in 1817 and the current bridge was opened in 1945. The bridge was named to commemorate the Battle of Waterloo in 1815. Waterloo Road also dates from this time, built on land belonging to the Archbishop of Canterbury.. St John's, Waterloo was constructed from 1822 by the Commissioners for Building New Churches as the population of the parish of