President Richard Nixon signed the US Endangered Species Act into law.
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The UN reported that one million plant and animal species were at risk of extinction.
The Nineteenth Amendment to the United States Constitution was certified, giving women the right to vote.
President Lyndon B signed the National Traffic and Motor Safety Act, which set new standards for vehicles and drivers.
Richard Nixon was harassed in Peru.
The US Federal Trademark Act began, which allowed authorization of Trademarks.
