Complex sentence: Carlo "Don Carlo" Gambino (August 24,1902--October 15,1976) was an Italian-born American gangster heavily involved in La Cosa Nostra, translated as'this thing of ours', otherwise known as the American Mafia.
Split into simpler sentences: Carlo "Don Carlo" Gambino (August 24,1902--October 15,1976) was an Italian-born American gangster heavily involved in La Cosa Nostra. Translated as'this thing of ours', "LCN" is otherwise known as the American Mafia.