Margaret Sanger is the woman who coined the phrase "birth control". This phrase first appeared in the pages of "The Woman Rebel", a feminist publication aimed at educating women about their contraceptive options. When Sanger used the term, she believed that is it was a more candid alternative to euphemisms such as 'family limit election'.

In addition to other activities, Margaret Sanger opened the American Birth Control League in 1921, which later became Planned Parenthood. Sanger a number of times publicly stated that women’s rights were inextricably linked to motherhood. She is famous for saying: “No woman can call herself free who does not own and control her body. No woman can call herself free until she can choose consciously whether she will or will not be a mother.”

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