Although these two phrases are similar, they key difference is the use of "been". The "has started" statement suggests that the action or event has just recently happened whereas "has been started" creates a time lapse that a significant amount of time as passed.
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History is the background story of whatever you are wondering about. Origin is how it started.
Well, the difference between today and tonight is today is now in the daytime and tonight is this night, after dark.That is what the difference is between them.
The difference between castles in 1066 and now.
what is the difference between vertical and horizontal timeline
the difference was that they had come from different places and had different cultures