Answer:The answer about how castles a reflection of a decentralized government is explained below.
Step-by-step explanation:
A decentralized government is a government structure in which the power to decision making is not restricted or owned by a single top position holder, rather the power to make decisions prevail in every layer of the government hierarchy.
Castles were built in the era when there was an empire rule in the world. The whole kingdom used to live in the area covered around by the castles. Because of the lack of centralized government system, warfare was a frequent occurrence. So in this situation, castles provided security and defense.
There were walls, moats and gates around the castles for the security purpose. good luck