El Imperio Romano en crisis, 284-363

The fourth century of Rome's history is a century where the threats experienced during the crisis of the third century have ended (or so it seemed) and he was not yet in the situation that led him to decay in the fifth century. However, this fourth century is, in fact, a period in which Rome lived in a constant crisis: usurpations everywhere, external threats, fierce conflicts on the Rhine and the Danube. Its eastern border was threatened by Sassanid Persia ruled by one of its most belligerent and successful kings: Shapor II. All this situation made Rome live in a crisis situation. This crisis also produced a number of important developments: a government of four emperors (the "tetrarchy"); a new dynasty created by Constantine; the rise of Christianity; the attempt to return to paganism by Julian the Apostate. Militarily, there were clashes on all its borders (against Germans, Salians, Camavos, Sarmatians) and it also experienced, twice, the violent Persian invasion which was followed in revenge by the Emperor Julian's campaign against Shapor. His death in 363, which puts an end to the last attempt to return to paganism, is one of the strongest blows that Rome will experience at this time and shows that the crisis is there. All these military campaigns, the palace conspiracies, the religious dispute are explained in the book that the reader has in his hands.