Plays based on the lives of saints were known in france as
allegories
tragedies
comedies
miracle plays
mystery plays
morality plays

The answer is:

miracle plays

Miracle plays were very well known in middle age Europe as plays were they acted the life and miracles of a certain Saint. This helped a lot because masses were spoken in latin, by doing this more and more part of the bible and Saints life were known by the commom folk.

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