Queen Elizabeth II was the longest-reigning monarch in British history, serving from February 6, 1952, until her death on September 8, 2022. Born on April 21, 1926, she became queen at the age of 25 after the death of her father, King George VI. Her reign saw significant changes in the UK and the Commonwealth, including the decolonization of Africa and the Caribbean. Throughout her life, Queen Elizabeth II was known for her dedication to public service and her role as a symbol of stability. She was married to Prince Philip, Duke of Edinburgh, for over 70 years, and they had four children: Charles, Anne, Andrew, and Edward.