The Division of the Empire:
Given the sheer size of the empire, it was almost impossible to govern effectively. ... The Western half of the empire would be ruled by Diocletian out of Rome. The Eastern half would be ruled by Maximian out of Byzantium.
Well, I think that in principle, every war is inevitable until it happens - perhaps, if the fall of the Iron Curtain had resulted in war we'd be calling it "inevitable" now. The war was however very predictable at the time, indeed due to the alliances. In fact, Otto von Bismark had long before seen the potential for war in Europe, due to the national conflicts and strong alliances, as seen in his quote: "One day great war will come out of some foolish thing in the Balkans"
One reason the league of nations failed was because "<span>A. It did not establish rules or structure to maintain harmony" since it was more of a general idea structure. </span>
The acceleration of factory production and increased activity in the mining and railroad industry
Yes, unity is a surefire strategy