Change of Thrones—Answer

Elizabeth II, Kenya
As George VI’s health got worse in 1951, his daughter and heir Princess Elizabeth often took over his duties. In early 1952, she and her husband, Prince Philip, Duke of Edinburgh, set out to travel to Australia and New Zealand via Kenya but on 6 February 1952, at Sagana Lodge in Kenya, they received the news that George VI had died due to a coronary thrombosis. She was now Queen Elizabeth II.

Elizabeth’s 70-year and 214-day reign is the longest in British history, the second-longest in any country, and the longest of any queen regnant.