Sri Lanka 1960 Sirimavo Bandaranaike was the country's (then called Ceylon) prime minister. She was the modern world's first female head of government. Other countries' first female leaders:
India 1966 Indira Gandhi, prime minister.
Israel 1969 Golda Meir, prime minister.
Argentina 1974 Maria Estela Isabel Martinez de Peron, president.
C.A.R. 1975 Elisabeth Domitien, prime minister.
Bolivia 1979 Lidia Gueiler, president.
Portugal 1979 Maria de Lourdes Pintasilgo, prime minister.
U.K. 1979 Margaret Thatcher, prime minister.