Complex sentence: Historically, the classification of Kajkavian has been a subject of much debate regarding both the question of whether it ought to be considered a dialect or a language, as well as the question of what its relation is to neighboring speeches.
Split into simpler sentences: Historically, the classification of Kajkavian has been a subject of much debate. Both the question of whether it ought to be considered a dialect or a language, as well as the question of what its relation is to neighboring speeches.