Margaret Thatcher Timeline By gracen5 Oct 13, 1925 Margaret Thatcher was born in Grantham, UK Jun 16, 1947 Margaret Thatcher graduated from Oxford University Oct 8, 1959 Thatcher won a seat in the House of Commons Jun 29, 1970 Thatcher was appointed to the cabinet as Secretary of State for Education and Science Feb 11, 1975 Thatcher became a conservative party leader and Leader of the Opposition May 4, 1979 Thatcher was appointed as the UK's first female prime minister and held office for 11 years, or 3 terms Jun 14, 1982 Thatcher led Britain in the Falklands War, causing Argentina to surrender and later declaring Britain had a "new spirit" Jun 1, 1990 Working closely with President Reagan, Thatcher was a key player in the ending of the Cold War with the Soviet Union, was nicknamed the "Iron Lady" Mar 7, 1991 Thatcher was named Baroness Thatcher of Kesteven after leaving office and was awarded the U.S. Medal of Freedom by President George H. W. Bush Apr 8, 2013 Margaret Thatcher dies