Feudalism helped protect communities from the violence and warfare that broke out after the fall of Rome and the collapse of strong central government in Western Europe. Feudalism secured Western Europe's society and kept out powerful invaders. Feudalism helped restore trade. Lords repaired bridges and roads.
The answer is: Runners allowed villages and cities throughout the empire to communicate quick with rulers far away.
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Not let them fall to communism which was all around them Japan china Russia but the closes was Cuba
It murdered thousands of innocent people, turned into an illiberal mess of collectivist radicalism disguised as enlightenment, produced a military dictatorship, ended with complete and total military failure, and resulted in the Bourbon Monarchy being restored.