Conversation so far:
What was significant during the Pre-19th century for the Oromo people?
Oromos also had a number of independent kingdoms, which they shared with the Sidama people.
What type of government did Oromo people in the Pre-19th century have?
Historically, Afaan Oromo-speaking people used their own Gadaa system of governance.

Question: What were some of their other kingdoms?
Self-contained rewrite: What were some of Oromo people's other independent kingdoms which they shared with the Sidama people?