Complex sentence: On March 5 1860 Tuscany voted in a referendum to join the Kingdom of Sardinia this was an important step in the unification of Italy ("Risorgimento") which was to follow shortly.
Split into simpler sentences: On March 5 1860, Tuscany voted in a referendum to join the Kingdom of Sardinia. This was an important step in the unification of Italy ("Risorgimento") which was to follow shortly.