Complex sentence: The Melbourne & Murray River Railway (now the Bendigo line) opened in 1859 running from Footscray to Sunbury, by the early 1860s the line had been extended to Bendigo.
Split into simpler sentences: The Melbourne & Murray River Railway (now the Bendigo line) opened in 1859, running from Footscray to Sunbury. By the early 1860s, the line had been extended to Bendigo.