Complex sentence: Eleven Jews were murdered in Speyer where the Bishop saved the community for a large payment, but in Worms some 800 were murdered, and in Mainz, over one thousand Jews were murdered as well as in Trier, Metz, Cologne, and elsewhere.
Split into simpler sentences: Eleven Jews were murdered in Speyer, where the Bishop saved the rest of the Jews for a large payment, but in Worms some 800 were murdered. In Mainz, over one thousand Jews were murdered, as well as more in Trier, Metz, Cologne, and elsewhere.