Complex sentence: In 1913 the political amnesty (declared in time for the) made it possible for Balmont to return home where he found himself in the center of public attention, a hero of banquets, ceremonies and extravagant celebrations.
Split into simpler sentences: In 1913 the political amnesty (declared in time for the) made it possible for Balmont to return home. Once again he was in the center of public attention, a hero of banquets, ceremonies and extravagant celebrations.