<Tr> <Th> Spouse (s) </Th> <Td> William Sanger (1902--1921) James Noah H. Slee (1922--1943) </Td> </Tr> <Tr> <Th> Children </Th> <Td> </Td> </Tr> <P> Margaret Higgins Sanger (born Margaret Louise Higgins, September 14, 1879--September 6, 1966, also known as Margaret Sanger Slee) was an American birth control activist, sex educator, writer, and nurse . Sanger popularized the term "birth control", opened the first birth control clinic in the United States, and established organizations that evolved into the Planned Parenthood Federation of America . </P> <P> Sanger used her writings and speeches primarily to promote her way of thinking . She was prosecuted for her book Family Limitation under the Comstock Act in 1914 . She was afraid of what would happen, so she fled to Britain until she knew it was safe to return to the US . Sanger's efforts contributed to several judicial cases that helped legalize contraception in the United States . Due to her connection with Planned Parenthood, Sanger is a frequent target of criticism by opponents of abortion . However, Sanger drew a sharp distinction between birth control and abortion and was opposed to abortion through the bulk of her career . Sanger remains an admired figure in the American reproductive rights movement . She has been criticized for supporting negative eugenics . </P>

Who pioneered the birth control clinic in the u.s