Complex sentence: The homeland of the Uto-Aztecan languages is generally considered to have been in the American Southwest or possibly Northwestern Mexico--although there is some discussion of the possibility that the language family originated in southern Mexico, within the Mesoamerican language area.
Split into simpler sentences: The homeland of the Uto-Aztecan languages is generally considered to have been in the American Southwest or possibly Northwestern Mexico. Linguistic scholars have discussed the possibility that the language family originated in southern Mexico, within the Mesoamerican language area.