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Margaret Thatcher (1925–2013) was a British politician and the first female Prime Minister of the United Kingdom, a position she held from 1979 to 1990. She was a member of the Conservative Party and the figurehead of a political ideology known as Thatcherism. Even before coming to power she was nicknamed The Iron Lady in Soviet propaganda, an appellation which stuck. The changes she set in motion between coming to power and 1985 were profound, and altered much of the economic, cultural and commercial landscape of Britain and, by example, the world as a whole. Along the way she also aimed to roll back the welfare state, or "nanny state", as she termed it. Her popularity finally declined when she replaced the unpopular local government rates tax with the even less popular Community Charge. At the same time the Conservative Party began to split over her sceptical approach to Economic and Monetary Union of the European Union. Her leadership was challenged from within and she was forced to resign in 1990, her loss at least partly due to inadequate advice and campaigning.