what was one significant indication that the european feudal system was effective?\nsimilar systems…

what was one significant indication that the european feudal system was effective?\nsimilar systems developed in china and japan.\neuropean peasants voted to keep the system in place.\ninvaders did not manage to attack europe.\nthe system put an end to the roman empire.
Answer
Brief Explanations:
The fact that similar systems developed in other regions like China and Japan can be seen as an indication of the effectiveness and influence of the European feudal system. Peasants didn't vote in the feudal - era Europe. Invaders did attack Europe during the feudal period. The feudal system emerged after the fall of the Roman Empire, not the other way around.
Answer:
Similar systems developed in China and Japan.