Complex sentence: Then he once again opened negotiations with the Catholic Church for a reconciliation; in March 1894, he approached Archbishop Satolli, the Apostolic Delegate to the U.S.A., who wrote to the Catholic Bishop Messmer of Green Bay that Vilatte was ready to reconcile.
Split into simpler sentences: Then he once again opened negotiations with the Catholic Church for a reconciliation. In March 1894 he approached Archbishop Satolli, the Apostolic Delegate to the USA, who wrote to the Catholic Bishop Messmer of Green Bay that Vilatte was ready to reconcile.