Complex sentence: Traditionally, historians mark the Battle of Rocroi (1643) as the end of Spanish dominance in Europe, but the war was not finished and after a severe setback, more Spanish victories followed.
Split into simpler sentences: Traditionally, historians mark the Battle of Rocroi (1643) as the end of Spanish dominance in Europe. But the war was not finished, and after a severe setback, more Spanish victories followed.