Margaret Hilda Thatcher (Baroness Thatcher, 13 October 1925 – 8 April 2013) was a British stateswoman and politician who was the Prime Minister of the United Kingdom from 1979 to 1990 and Leader of the Conservative Party from 1975 to 1990. She was the longest-serving British prime minister of the 20th century, and the first woman to have held the office. A Soviet journalist dubbed her the 'Iron Lady', a nickname that became associated with her uncompromising politics and leadership style. As Prime Minister, she implemented policies that have come to be known as Thatcherism.

Thatcher was born Margaret Hilda Roberts on 13 October 1925, in Grantham, Lincolnshire. Her father was Alfred Roberts, originally from Northamptonshire, and her mother was Beatrice Ethel (née Stephenson) from Lincolnshire.

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