Complex sentence: In 1984, he was awarded the "Medalla Castelao"-the greatest civil award in Galicia-and was invited to join the "Consello da Cultura Galega" ("Council for the Galician Culture"), but he declined the invitation.
Split into simpler sentences: In 1984, he was awarded the "Medalla Castelao"-the greatest civil award in Galicia. Also, he was invited to join the "Consello da Cultura Galega" ("Council for the Galician Culture"), but he declined the invitation.