Complex sentence: The line opened for business on July 1,1868, and the State Commissioners who authorized the "experiment" declared it a success, and the Governor authorized its completion to Spuyten Duyvil.
Split into simpler sentences: The line opened for business on July 1,1868. The State Commissioners who authorized the "experiment" declared it a success, and the Governor authorized its completion to Spuyten Duyvil.