CHAPTER SUMMARY
•The three great classical civilizations of Rome, Han China, and Gupta India collapsed or declined.
•All three suffered from invasions by nomads from central Asia who took advantage of internal imperial weaknesses.
•Rome also endured Germanic incursions, and the western portion of its empire lost more of its earlier achievements than other civilizations.
•The general collapse forms a significant break in world history.
•Many components of the classical achievement survived the period of decline, and new forms appeared as civilizations altered to meet changing conditions.