Queen Victoria replaced him. Salisbury remained prime minister for the remainder of Victoria's reign. On 23 September 1896, Victoria surpassed her grandfather George III as the longest-reigning monarch in British history. The Queen requested that any special celebrations be delayed until 1897, to coincide with her Diamond Jubilee, which was made a festival of the British Empire at the suggestion of the Colonial Secretary, Joseph Chamberlain. The prime ministers of all the self-governing Dominions were invited to London for the festivities. One reason for including the prime ministers of the Dominions and excluding foreign heads of state was to avoid having to
Diamond Jubilee of Elizabeth II in celebration of the jubilee. From the summit, they sent a loyal greeting to the Queen via satellite, to which the monarch promised to reply. The next day, a group from the Royal Canadian Dragoons stationed in Afghanistan climbed with British soldiers to the peak of the 7,000 foot mountain Gharib Ghar, within the Kabul Military Training Center, "as part of the Diamond Jubilee celebrations for Queen Elizabeth II." In the United Kingdom, Canada House held a Big Jubilee Lunch on 3 June and two beacons were lit on the building's roof the following evening, the night of the Diamond