Uber became a public company, opening on the New York Stock Exchange.
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Christopher Columbus spotted the Cayman Islands.
Jeffrey Dahmer got baptized while in prison at Columbia Correctional Institution in Wisconsin.
The first telephone was installed in the telegraph room in the White House, thanks to President Rutherford B. Hayes.
Mother's Day was officially celebrated for the first time in Grafton, West Virginia.
The parliament of Great Britain passed the Tea Act, a piece of legislation that ultimately led to the Boston Tea Party.
