With the death of Sulla ends what we may call the first act of the Roman Revolution. We are now in the middle of a revolution in more than one sense of that word. The constitution and the government of Rome are being slowly but surely changed, and at the same time the era of the free and independent city-state of the Græco-Roman world is being brought to an end. Both these changes, as we can see now, were inevitable; without them the civilised world could not have been defended against barbarian invasion, or Italy united into a contented whole possessed of Roman citizenship. In the first act, as I have called it, the immediate danger of invasion was checked, both in north and east, and Italy had become Roman, enjoying perfect equality with Rome under the great body of Roman law now being rapidly developed.

But, in truth, this inevitable work of change was not as yet half done. It was soon found that both in north and east some definite system of frontier must be fixed, or the Empire would be in continual peril from without. It was also found that Sulla’s constitution would not work, and that to defend the frontiers of civilisation effectively there must be a government of sterner force, whatever form that force might take. Thus in the second act of the Revolution we have two main points to attend to: first, the settlement of the frontiers against Oriental despots and wandering hordes of Germans: secondly, the acquisition of power by a great soldier-statesman, Julius Cæsar, and the abandonment, as a working power, of the ancient polity of Senate and people. And inasmuch as this period of revolution was also the age of the best and purest bloom of Latin literature, I must find space for a few words about Cicero, Lucretius, and Catullus.

I said in the last chapter that there was a very dangerous enemy threatening the eastern or Greek part of the Empire. This was Mithradates, king of Pontus, that part of Asia Minor which borders on the Euxine (Black Sea) eastwards: a man of genius and ambition, and by no means to be reckoned a barbarian. It is curious that he began his great career by protecting Greek cities against their enemies, and one is tempted to ask whether he might not have been at least as beneficent a champion and master for the Greek world as Rome herself. But we must look at things with Roman eyes if we are to understand the work of Rome in the world; we must think of Mithradates as the Romans then did, as the deadly enemy alike of Greek freedom and of Roman interests.

His armies had invaded Greece in 87 B.C. and had even occupied Athens, while the Greek cities of Asia Minor had willingly submitted to him: the whole Hellenic world was fast coming under his sway. Then Sulla had expelled his generals from Greece proper, and had forced him to accept such conditions of peace as kept him quiet for a few years. But when Sulla was dead he started on a fresh career of conquest, and once more the Roman protectorate of Greek civilisation was broken down. For a time it looked as if no power could restore it. The sea was swarming with pirates from Cilicia, who constantly harassed the Roman fleets, and ventured even as far as Italy, snapping up prisoners for sale as slaves in the great slave-market at Delos. And behind Mithradates and these pirates there was another power even more formidable. Tigranes, king of Armenia, had also been extending his dominions southward, and was even in possession of Syria and Judæa at the time of which we are now speaking, 75 B.C. Should the two kings unite their forces and policy, it would be all but impossible for Rome to remain the mistress of the eastern Mediterranean and the Hellenic world. It was another example of Rome’s wonderful good fortune that this alliance was never solidly effected till too late.

The Senate, left by Sulla to govern the world, soon showed that it was incapable of grasping the necessity of vigorous action in the East. It was not till 74, four years after Sulla’s death, that they sent out a really capable general with an adequate force. Lucullus, whose name has become a by-word for wealth and luxury, was in his prime a soldier of great ability, and he soon broke the power of Mithradates, who immediately fled for refuge to Tigranes. This made it absolutely necessary to deal with that king also; and Lucullus invaded Armenia and captured the king’s new capital, Tigranocerta. Unluckily, he had not that supreme gift of a great commander which enables him, as it afterwards enabled Cæsar, to lead his men where and when he will; the army mutinied, refusing to go farther into the wild Armenian mountains, the most distant and formidable region a Roman army had as yet penetrated. Lucullus had to retreat.

Then, under pressure from the men of business who were losing money by the instability of Roman dominion in Asia, Senate and people agreed to supersede Lucullus by a younger man, reckoned the best soldier of the day, and a military pupil of Sulla. This was the famous Gnæus Pompeius, known to us familiarly as Pompey. In 67 he had been commissioned to clear the sea of pirates, and did it effectually. Now, with a combination of civil and military power such as no Roman had yet enjoyed, he took over Lucullus’s army, made short work of Mithradates, and utterly broke up the empire of Tigranes. He overran Syria, the region between the Mediterranean and the desert stretching to the Euphrates, penetrated to Judæa and took Jerusalem. This famous event is the first in the long and sad story of the relations of Rome with Judæa. At Jericho, before he reached the holy city, he received the dispatch which told him of the death of Mithradates, the removal from the scene of one who had been for thirty years Rome’s most dangerous enemy.

The result of the efforts of Lucullus and Pompey was the establishment of a frontier system in the East which may be said to have held good for the rest of Roman history. The principle of it is not easy to explain; but if the reader will take a map and trace the river Euphrates from its sources in western Armenia to the Arabian desert, and then make it clear to himself that all within that line was to be either Roman or under Roman suzerainty, he will be able to form some idea of its importance in history. There were to be three new Roman provinces: Pontus with Bithynia in the north of Asia Minor, Cilicia on its south-eastern coast, and Syria, the coast region from Cilicia southwards to the frontier of Egypt. But between these and the Euphrates there were two kingdoms, Cappadocia and Galatia, and other smaller ones, which formed a Roman sphere of influence where Rome herself could not as yet be constantly present. Imperfect as this system seems, it was quite strong enough to spread the prestige of the Roman Empire far and wide in the East, and the great king of Parthia, beyond the Euphrates, might well begin to be alarmed for his own safety.

Now in settling this frontier system Pompey had, of course, to attend to an infinite number of details, and to make decisions, convey privileges, negotiate treaties, and grant charters, in dealing with those cities new and old which formed a most important part of his plan of settlement and defence. All this had to be done on his own responsibility, but would need the sanction of the Senate to be recognised as legally valid. When he returned home in 62 B.C. he expected that the Senate would give this sanction, especially as he had just disbanded his army, with which he might, if he had chosen, have enforced his claims. But the Senatorial government was reduced to such a state of imbecility that the majority would have nothing to do with Pompey’s invaluable work: they were jealous, they were lazy, and, above all, they were ignorant. So he had to fall back after a year or two on the consul of 59, C. Julius Cæsar, who undertook to get the necessary sanction from the people if not from the Senate. In return Pompey was to help him to get a long command in Gaul, so that the work of frontier defence there begun by Marius might be resumed and completed. At this very moment a German people, the Suebi, whose name still survives in the modern Swabia, were threatening the rich plains of what is now eastern France: and then, just as a peace had been patched up with them, a Gallic tribe, the Helvetii, suddenly issuing from its home in (modern) Switzerland in search of new settlements, or pressed on by other tribes beyond it, was about to break into the Roman province of Transalpine Gaul. But Cæsar had now done his part by Pompey, though not, indeed, without straining the constitution; and moving with the wonderful swiftness that afterwards became characteristic of him as a general, he reached Geneva just in time to stop them, and soon afterwards beat them in a great battle and forced them back to their homes.

This was the beginning of a career of conquest which made the glorious country we know as France into the most valuable part of the Roman Empire, and later on into the most compact and gifted nationality in Europe. What motives inspired Cæsar in all he did during the nine years he spent there we need not ask, for we can only guess the answer; though he has left us his own story of his campaigns in simple straightforward Latin, he has not chosen to tell us what was all along at the back of his mind. Ambition, says the superficial historian; the desire to make himself in due time tyrant of Rome and the Empire. But we may take it as certain that Cæsar, a man whose health was never strong, would not have exposed himself to constant peril of his life for nine successive years had he really all the time been nursing a secret ambition which death or serious illness might at any time destroy. What he really seems to have loved, like C. Gracchus, was work—steady, hard work with no one to hinder him, and with a definite practical object before him. Doubtless further hopes or fears were in his mind, but this great practical genius, with an intellect characteristically Roman,[10] though more scientific in its tendency than that of any other Roman known to us, was always bent on the work immediately in front of him, and never rested till it was completed to his satisfaction.

When Cæsar hurried up to check the Helvetii in 58 B.C. there was but one Roman province in Gaul, the south-eastern part of modern France (which still teems with Roman remains and inscriptions), together with a considerable district to the west of it at the foot of the Pyrenees. When he finally left Gaul at the end of 50, the whole of modern France and Belgium had been added to the Empire, though not as yet organised into provinces. He did not take long to reach our Channel and to subdue the tribes on the coast; he began the written history of our island by invading it twice, and recording such information as he could gain about its geography and inhabitants. He crossed the Rhine into Germany by a bridge constructed for him by his engineers: and the method of building this bridge survives in his book to puzzle the ingenuity of scholars as well as school-boys. The Gauls were doubtless amazed at these performances, as he meant them to be; and, after one heroic effort to save themselves from becoming an appendage of a Mediterranean empire, they had to submit. While we can feel with these noble efforts for freedom, or blame Cæsar for what sometimes seems unnecessary cruelty, we must remember that from this time forward the country from the Rhine to the ocean becomes a great factor in European civilisation.