Complex sentence: The line opened in December 1876 and the NER quickly negotiated running powers over the new section of line, this allowed the NER to run trains from Harrogate to Bradford without going via Leeds.
Split into simpler sentences: The line opened in December 1876 and the NER quickly negotiated running powers over the new section of line. This allowed the NER to run trains from Harrogate to Bradford without going via Leeds.