 Thus, violently, in August 1235, both Christianity and the Catalonian language came to Ibiza to stay.
Violence was also how Christianity and the Catalonian language maintained their status in Ibiza.
mnli hypothesis: Violence was also how Christianity and the Catalonian language maintained their status in Ibiza. premise:  Thus, violently, in August 1235, both Christianity and the Catalonian language came to Ibiza to stay.