Where in Ethiopia is Amharic most commonly spoken?

Amharic is most commonly spoken in the central and northwestern regions of Ethiopia. It is primarily associated with the central highlands, where the Amhara people—one of the country's two largest ethnolinguistic groups—reside.123

While Amharic is native to these central and northwestern areas, it also serves as a principal language throughout the nation and functions as the working language of the federal government.13