Complex sentence: Following the arrival of the railways in the 1880s, the old racetrack and surrounding area was developed by Daniel Webster Clendenan, and the two main straightaways of the track are now High Park Avenue and Pacific Avenue.
Split into simpler sentences: Following the arrival of the railways in the 1880s, the old racetrack and surrounding area was developed by Daniel Webster Clendenan. The approximate locations of the two main straightaways of the track are now High Park Avenue and Pacific Avenue.