Complex sentence: Linee Aeree Italiane S.p.A. was established on 16 September 1946 as Aerolinee Italiane Internazionali, more commonly known as Alitalia, an Italian portmanteau of the words "ali" (wings) and "Italia" (Italy).
Split into simpler sentences: Linee Aeree Italiane S.p.A. was established on 16 September 1946 as "Aerolinee Italiane Internazionali". Its popular name, Alitalia, was an Italian portmanteau of the words "ali" (wings) and "Italia" (Italy).