<P> The efforts of the free love movement were not successful and, at the beginning of the 20th century, federal and state governments began to enforce the Comstock laws more rigorously . In response, contraception went underground, but it was not extinguished . The number of publications on the topic dwindled, and advertisements, if they were found at all, used euphemisms such as "marital aids" or "hygienic devices". Drug stores continued to sell condoms as "rubber goods" and cervical caps as "womb supporters". </P> <P> After World War II, the birth control movement had accomplished the goal of making birth control legal, and advocacy for reproductive rights began to focus on abortion, public funding, and insurance coverage . </P> <P> Birth control advocacy organizations around the world also began to collaborate . In 1946, Sanger helped found the International Committee on Planned Parenthood, which evolved into the International Planned Parenthood Federation and soon became the world's largest non-governmental international family planning organization . In 1952, John D. Rockefeller III founded the influential Population Council . Fear of global overpopulation became a major issue in the 1960s, generating concerns about pollution, food shortages, and quality of life, leading to well - funded birth control campaigns around the world . The 1994 International Conference on Population and Development and the 1995 Fourth World Conference on Women addressed birth control and influenced human rights declarations which asserted women's rights to control their own bodies . </P> <P> In the early 1950s, philanthropist Katharine McCormick had provided funding for biologist Gregory Pincus to develop the birth control pill, which was approved by the Food and Drug Administration (FDA) in 1960 . The pill became very popular and had a major impact on society and culture . It contributed to a sharp increase in college attendance and graduation rates for women . New forms of intrauterine devices were introduced in the 1960s, increasing popularity of long acting reversible contraceptives . </P>

When was birth control legalized in the united states