Milton S. Hershey founded Hershey’s Chocolate Company in Lancaster, Pennsylvania, US.
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The first music store in America was opened in Philadelphia by Michael Hillegas.
Thirteen Mennonite families arrived in Philadelphia from Germany.
The Portage Railroad Line in Pennsylvania built the first railroad tunnel in the US.
American driller Edwin Laurentine Drake successfully drilled the first oil well in Pennsylvania, US.
America's second president John Adams was inaugurated in Philadelphia, Pennsylvania.
