These later comers were the instruments of that more overwhelming destruction for which the Goths had but prepared the way. To resist Alaric, the Roman legions had been withdrawn from all the western frontiers, and thus more distant and far more savage tribes of the Teutons beheld the glittering empire unprotected, its pathways most alluringly left open. They began streaming across the undefended Rhine and Danube. Their bands were often small and feeble, such as earlier emperors would have turned back with ease; but now all this fascinating world of wealth, so dimly known and doubtless fiercely coveted, lay helpless, open to their plundering. The Vandals ravaged Gaul and Spain, and, being defeated by the Goths, passed on into Africa. The Saxons and Angles penetrated England[2] and fought there for centuries against the desperate Britons, whom the Roman legions had perforce abandoned to their fate. The Franks and Burgundians plundered Gaul. Fortunately the invading tribes were on the whole a kindly race. When they joyously whirled their huge battle-axes against iron helmets, smashing down through bone and brain beneath, their delight was not in the scream of the unlucky wretch within, but in their own vigorous sweep of muscle, in the conscious power of the blow. Fierce they were, but not coldly cruel like the ancients. The condition of the lower classes certainly became no worse for their invasion; it probably improved. Much the new-comers undoubtedly destroyed in pure wantonness. But there was much more that they admired, half understood, and sought to save. Behind them, however, came a conqueror of far more terrible mood. We have seen that when the Goths first entered Roman territory they were driven on by a vast migration of the Asiatic Huns. These wild and hideous tribes then spent half a century roaming through central Europe, ere they were gathered into one huge body by their great chief, Attila, and in their turn approached the shattered regions of the Mediterranean.[3] Their invasion, if we are to trust the tales of their enemies, from whom alone we know of them, was incalculably more destructive than all those of the Teutons combined. The Huns delighted in suffering; they slew for the sake of slaughter. Where they passed they left naught but an empty desert, burned and blackened and devoid of life. Crossing the Danube, they ravaged the Roman Empire of the East almost without opposition. Only the impregnable walls of Constantinople resisted the destruction. A few years later the savage horde appeared upon the Rhine, and in enormous numbers penetrated Gaul. No people had yet understood them, none had even checked their career. The white races seemed helpless against this "yellow peril," this "Scourge of God," as Attila was called.