The study is about the missionaries and the beginning of Modern Education among the SayyornOromo who live in Dambi Dollo and its surrounding. The study attempts to document how thernMissionaries, especially the Protestant Missionaries came to the area of Sayyo and theirrnmethods of expansion as well as how they undertook the conversion activity among the SayyornOromo The study also deals with what the traditional religious and ritual ceremollie of thernSayyo people looked like before the introduction of either Christianity or Islam in to the area.rnFurther investigation was also conducted to check how the Ethiopian Orthodox church expandedrnin the area and how it was welcomed among the Sayyo Drama. Furthermore the study tried torncheck how the Ethiopian Orthodox Church, the first Christian Church, which had penetrated thernSayl'o area and how if responded to the newly arrived Protestan tism as well as the relationsh iprnbetween the Ethiopian Orthodox Christians and the Protestants.rnIn this study special focus is given to the Missionaries modernizing efforts among the SayyornOromo. That means how Missionaries started building Schools, Hospitals, Clinics and differentrnChurches. Despite the efforts of the missionaries in expanding modernization among the SayyornOromo they had also affected the normal life-style of the people.rnThe research reveals that Christianity arrived among the Sayyo Oromo of Dambi Dollo and itrnurroundings before a century ago. Protestantism expanded in the area by convincing methodsrnof donation and often by impressive pressures made particularly through attacking therntraditional Oromo religion with its rituals.rnIn genera! the contextual background, Political oppression, low economic status, lack ofrninfrastructure, the event of Influenza Epidemic and other world historical events contributed tornthe people.,Â·' active conversion to Protestantism The mass conversion of the people resulted inrncreating new spiritual orientation, which brought about holistic change, including thernundermining of indigenous cultural practices.