President Richard Nixon signed the US Endangered Species Act into law.
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The Civil Rights Act of 1964 was signed into law by US President Lyndon B. Johnson.
The First Zoological Society in the US was formed in Philadelphia.
The US Supreme Court ruled to allow teachers to spank students even against their parent's wishes.
The first polar bear in America was exhibited in Boston.
The Geneva Convention on Prisoners of War was signed in Geneva, Switzerland.
