Complex sentence: The DL&W's Warren Railroad, chartered in 1851 and completed in 1862 under railroad magnate John I. Blair, was meant to provide a straight connection between the mainlines of the DL&W in Pennsylvania and the Central Railroad of New Jersey (CNJ).
Split into simpler sentences: The DL&W's Warren Railroad was chartered in 1851 and completed in 1862 under the supervision of railroad magnate John I. Blair. It was meant to provide a straight connection between the mainlines of the DL&W in Pennsylvania and the Central Railroad of New Jersey (CNJ).