Short answers, pulled from the story.
Elizabeth II reigned for 70 years and 214 days, from the 6th of February 1952 until her death in 2022. This is the longest reign of any British monarch and the longest of any queen regnant in history.
Elizabeth II was born on the 21st of April 1926 at 2:40 am, by Caesarean section, at 17 Bruton Street in Mayfair, London. She was the first child of the Duke and Duchess of York, who later became King George VI and Queen Elizabeth the Queen Mother.
Elizabeth II became heir presumptive in 1936 when her uncle Edward VIII abdicated over his proposed marriage to the divorced American socialite Wallis Simpson. Her father became King George VI, and because she had no brothers, she stood next in line.
Elizabeth II married Prince Philip of Greece and Denmark on the 20th of November 1947 at Westminster Abbey. Before the wedding he renounced his Greek and Danish titles, converted to Anglicanism, took the surname Mountbatten, and was created Duke of Edinburgh.
Elizabeth II called 1992 her annus horribilis in a speech marking her Ruby Jubilee. That year Andrew separated from Sarah, Anne divorced Captain Mark Phillips, demonstrators in Dresden threw eggs at the Queen, and a large fire broke out at Windsor Castle in November.
Elizabeth II died at Balmoral Castle in Scotland on the 8th of September 2022 at 3:10 pm, aged 96. Her death certificate recorded the cause as old age, and she was succeeded by her eldest son, Charles III.