パクス・ロマーナ
The first "Pax Sinica" of the Eastern world emerged during the rule of the Han dynasty and coincided with the "Pax Romana" of the Western world led by the Roman Empire. It stimulated long-distance travel and trade in Eurasian history. Both the first "Pax Sinica" and the "Pax Romana" eroded at circa AD 200.