Queen Elizabeth II
Queen Elizabeth II was the monarch of the United Kingdom and Commonwealth realms for over 70 years, becoming the longest-reigning monarch in British history.
Elizabeth became queen in 1952 at age 25 following the death of her father, King George VI, and was crowned in a televised coronation in 1953 that was watched by millions.
Her reign spanned enormous social and political change, including the decolonization of the British Empire, the transformation of the Commonwealth, and the modernization of the British monarchy's public role.
She died in September 2022 at age 96, having reigned for over 70 years, and was succeeded by her son, King Charles III.