torians. They succeeded each other with terrifying rapidity, murdering their way into the palace and being murdered out of it as soon as their successors had become rich enough to bribe the guards into a new rebellion.
WHEN THE BARBARIANS GOT THROUGH WITH A ROMAN CITY
Meanwhile the barbarians were hammering at the gates of the northern frontier. As there were no longer any native Roman armies to stop their progress, foreign mercenaries had to be hired to fight the invader. As the foreign soldier happened to be of the same blood as his supposed enemy, he was apt to be quite lenient when he engaged in battle. Finally, by way of experiment, a few tribes were allowed to settle within the confines of the Empire. Others followed. Soon these tribes complained bitterly of the greedy Roman tax-gatherers, who took away their last penny. When they got no redress they marched to Rome and loudly demanded that they be heard.
This made Rome very uncomfortable as an Imperial residence. Constantine (who ruled from 323 to 337) looked for a new capital. He chose Byzantium, the gate-way for the commerce between Europe and Asia. The city was renamed
