16. Was Galienus the only pretender to the throne?
17. What measures did Galienus adopt on this?
18. Who succeeded Galienus?
19. What were his character and end?
20. Who succeeded Claudius?
21. Who was Aurelian?
22. Over whom did he triumph?
23. What occasioned his destruction?
24. Who succeeded Aurelian?
25. Did he govern well?