Complex sentence: The Sacramento Northern Railway was created out of two different systems; one, the third rail "North End", stretched north of Sacramento through the agricultural Sacramento Valley to Chico and was originally from 1904 to 1918 the Northern Electric Railway.
Split into simpler sentences: The Sacramento Northern Railway was created out of two different systems. The third rail "North End" stretched north of Sacramento through the agricultural Sacramento Valley to Chico and from 1904 to 1918 was the Northern Electric Railway.