1916 Margaret Sanger opens first birth control clinic in the United States. The next year she was deemed guilty of maintaining a public nuisance and sentenced to jail for 30 days. Once released, she re-opened her clinic and continued to persevere through more arrests and prosecutions.

1938 In a case involving Margaret Sanger, a judge lifted the federal ban on birth control, ending the Comstock era. Diaphragms, also known as womb veils, became a popular method of birth control.

1950 While in her 80s, Sanger underwrote the research necessary to create the first human birth control pill. She raised $150,000 for the project.

1960 The first oral contraceptive, Enovid, was approved by the US Food and Drug Administration (FDA) as contraception.

1965 The Supreme Court (in Griswold v. Connecticut) gave married couples the right to use birth control, ruling that it was protected in the Constitution as a right to privacy. However, millions of unmarried women in 26 states were still denied birth control.

https://www.ourbodiesourselves.org/health-info/a-brief-history-of-birth-control/