Chrysalis wasn't always evil, nor were the changelings, but sometimes, bringing races together can only tear them apart. (this is the story that will explain the things I referenced in the story, Apples) (will only be teen because of the language)

when Applejack finds an apple that not even Twilight knows of, Twilight instantly contacts Princess Celestia who forbids them from eating it. But even She has to fall to curiosity now and again.