In 1887 the United Kingdom and the British Empire celebrated Queen Victoria's golden jubilee. Victoria marked 20 June 1887—the fiftieth anniversary of her accession—with a banquet, to which fifty European kings and princes were invited. Although she could not have been aware of it, there was a plan by Irish Republicans to blow up Westminster Abbey while the Queen attended a service of thanksgiving. This assassination attempt, when it was discovered, became known as the Jubilee Plot. At the time, Victoria was an extremely popular monarch.
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