10 авг 1859 г. - The successful vulcanization of rubber provides women with reliable condoms for the first time. The birth rate in the United States continues its downward, century-long spiral. By the late 1900s, women will raise an average of only two to three children, in contrast to the five or six children they raised at the beginning of the century.
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Дата:
10 авг 1859 г.
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~ 164 г назад
