What was one significant indication that the european feudal system was effective?

similar systems developed in china and japan.
european peasants voted to keep the system in place.
invaders did not manage to attack europe.
the system put an end to the roman empire.

"Similar systems developed in China and Japan"

the answer is c.

i hope this .

`stare decisis is a legal doctrine that obligates courts to follow historical cases when making a ruling on a similar current or future case. stare decisis ensures that cases with identical facts be approached in the same way, unless overruled by the same court or a higher court such as the us supreme court. simply put, it binds courts to follow legal precedents set by previous decisions.

stare decisis is a latin term meaning "to stand by that which is decided".