Margaret Thatcher, known as the "Iron Lady," served as the Prime Minister of the United Kingdom from 1979 to 1990. Her strong, uncompromising leadership style earned her this nickname, particularly in the context of her tough stance against the Soviet Union during the Cold War. Thatcher was known for her economic policies aimed at reducing state intervention, promoting free-market principles, and fostering privatization. Her government faced significant challenges, including economic recession and industrial unrest, yet she remained a pivotal figure in British politics. Her legacy is marked by both strong support and intense criticism, shaping the trajectory of the Conservative Party and modern Britain.