Complex sentence: Francesco Zuccarelli was a founding member, in 1768, of the Royal Academy of Arts, and on his return to Italy in 1771 he was elected President of the Venetian Academy.
Split into simpler sentences: Francesco Zuccarelli was a founding member, in 1768, of the Royal Academy of Arts. On his return to Italy in 1771 he was elected President of the Venetian Academy.