How did Margaret Thatcher get her nickname, the Iron Lady?

She made tough policy decisions and enforced them with an ironclad resolve.

She carried an ironclad briefcase.

She won political battles against the iron labor unions.

She was a very vocal opponent of the communist Iron Curtain

Margaret Thatcher got her nickname, the Iron Lady, because she made tough policy decisions and enforced them with an ironclad resolve.

Explanation:

Margaret Thatcher was the first woman to be British prime minister. During her time in office, she promoted conservative values and a policy of vigorous economic and social reforms to strengthen the market economy for three terms. Named Thatcherism, this policy was based on economic liberalism and included elements such as tax cuts, trade union control, and immigration regulation. For her uncompromisingness and determination, Thatcher earned the nickname Iron Lady. It also advocated an independent and strong foreign policy for the United Kingdom of Great Britain and Northern Ireland, which was reflected in the numerous exceptions it received for the country within the European Union, as well as the war for the Falklands in 1982 against Argentina.