Yes, it does help iƱ undrstndng the pre modern past, but after all movies will always be movies, whatever u do the makers would always do changes tomake the movie attractive. Another reason for this is that the maxkmum time that is considered right for a movie is 3 hrs, so they have to show the whole story in this time, many things are changed for this reason also, so according to me if helps but still books are the best source to get informationof the history.
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