New York became the first US court to allow blood test results to be used as evidence.
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President Arthur and NY Governor Cleveland opened the Brooklyn Bridge.
Kangaroo fossil research showed that they may have learned to hop over 20 million years ago.
The FDA approved the first oral contraceptive pill called Enovid.
The first telephone call was made across the Atlantic – from London to New York.
Construction started on Chicago's first-ever skyscraper for the Home Insurance Company of New York.
