Answer
The answer is Oromo and Sidama were not part of the territorial expansion during Menelik II's reign. During his rule, Menelik II focused his expansion efforts on the northern and southern territories, successfully incorporating regions such as Wollo, Tigray, and large parts of the Ethiopian Somali region into the Ethiopian Empire. However, the Oromo and Sidama regions remained relatively autonomous and were not directly annexed during this period.