Complex sentence: The Harrisburg Line and the Philadelphia and Reading Rail Road opened on July 16,1838 between Reading, Pennsylvania and Norristown, Pennsylvania and the line was extended to Philadelphia, Pennsylvania from Norristown on December 9,1839.
Split into simpler sentences: The Harrisburg Line and the Philadelphia and Reading Rail Road opened on July 16,1838 between Reading, Pennsylvania and Norristown, Pennsylvania. The line was extended to Philadelphia, Pennsylvania from Norristown on December 9,1839.