Shortly after the barbaric invasions, Rome's urban setting disappeared and gave way to fields, pastures, and forests. The principles of Roman urban culture had to adapt to this new change. Powerful Germanic tribes invaded Europe and settled there in the 3rd and 4th centuries of the Christian era. They brought new rules of conduct, new codes of ethics and a new way of accumulating and distributing wealth. A chaotic society The world had entered a new era filled with riddles and mysteries, it was dangerous to venture into the hostile forests where bandits had control. Travelers from Roman times had disappeared. Collective fear reigned everywhere. The first Merovingians to destroy themselves did little to improve this chaotic situation. As soon as the invasions of the East were contained, it was necessary to face the Vikings and Normans. The great Charlemagne partly restored the situation by laying down the principles of a new administration. Money circulated again, schools were created,
