A 57-year-old man received the first transplanted heart from a genetically modified pig.
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The first telephone call was made across the Atlantic – from London to New York.
The US celebrated the opening of the country's first railroad station in Baltimore.
The Sahara desert was blanketed in snow.
Italy used its current tri-colored flag for the first time.
Black men were chased away by gunmen after trying to rescue white survivors during a mine explosion.
