Respuesta :
Feudalism was based on the exchange of option(b) i.e, Personal allegiance.
Feudalism was a system of political and military rules that predominated in medieval Europe between the 9th and 15th centuries. It can be broadly characterized as a system for arranging relationships in society around the possession of land, often known as a fief, in return for labor or service.
The major goal of feudalism was to establish a system where a standing army would be created for service in addition to generating land revenue. In other words, feudalism was a social structure in which ownership of land determined one's position in society.
After Rome fell and a strong central government in Western Europe was overthrown, feudalism aided in shielding towns from the bloodshed and fighting that ensued. Feudalism protected Western Europe's society and kept mighty invaders at bay. Trade was revived by feudalism. Lords made repairs to roads and bridges.
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