Final answer:
The birth control movement did not start in the 20th century, it began in the late 19th century with pioneers like Margaret Sanger advocating for the use of birth control methods.
Step-by-step explanation:
No, the statement that the birth control movement started in the 20th century is False. The birth control movement actually began much earlier. In the late 19th century, pioneers like Margaret Sanger in the United States and Marie Stopes in Britain were advocating for the use of birth control methods. Sanger, a nurse who cared for working-class women, saw the detrimental effects of repeated pregnancies and championed the cause. In 1921, she founded the American Birth Control League, which later became Planned Parenthood.