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Scientists conclude that pregnancy can be prevented by avoiding intercourse during the fertile period.
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Scientists create the pregnancy test.
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Scientists identify progesterone, the ovarian hormone.
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The human sex hormone estrogen was identified.
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The term “feminine hygiene” was used to sell contraceptives.
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Sanger fights against a Japanese shipment of diaphragms to the U.S. and the court rules in favor. Allowing contraceptive devices and information via mail and recognizes birth control as a medical practice.
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The diaphragm is the most effective and expensive form of birth control available in America. Women relied less effective douches for contraception.
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Russell Marker made synthetic progesterone with Mexican wild yams discovering progesterone production. Now the basis for hormonal birth control.
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Americans spent around $200 million a year on contraceptives. Anti-birth control laws restricted people from "exhibit, sell, prescribe, provide, or give out information" about condoms.
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Human trials had to be executed for FDA approval. 50 women were involved.
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Not one of the 50 women in the trial ovulated while on the pill. Scientist's research proved that progesterone pill inhibits ovulation The birth control pill was born.
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The first birth control submitted for FDA approval in America.