Historiography of Ethiopia and the Horn has changed enormously during the past hundred years in ways that merit fuller treatment than can be afforded here
The earliest known reference that we have on history of Ethiopia and the Horn is the Periplus of the Erythrean Sea, written in the first century A.D by an anonymous author
Another document describing Aksum's trade and the then Aksumite king's campaigns on both sides of the sea is the Christian Topography composed by Cosmas Indicopleustes, a Greek sailor, in the sixth century A.D
One such account offers tremendous insight into the life of a Muslim saint, Shaykh Ja'far Bukko of Gattira, in present day Wollo, in the late nineteenth century
Chronicles in the ancient Ethiopian Ge'ez tongue first appeared in the fourteenth century and continue (sometimes in Amharic) into the early twentieth century
Chronicles incorporate both legends and facts-past and contemporary about the monarch's genealogy, upbringing, military exploits, piety and statesmanship
Chronicles are known for their factual detail and strong chronological framework, even if it would require considerable labor to convert their relative chronology to an absolute one
Chronicles explain historical events mainly in religious terms; they offer little by way of social and economic developments even in the environs of the palace
August Dillman published two studies on ancient Ethiopian history in the nineteenth century and demonstrated all markers of objectivity in his historical research endeavors
The earliest group of traditional Ethiopian writers who made conscious efforts to distance themselves from chroniclers include Aleqa Taye Gebre-Mariam, Aleqa Asme Giorgis and Debtera Fisseha-Giorgis Abyezgi
Yilma Deressa's Ye Ityopiya Tarik Be'asra Sidistegnaw Kifle Zemen addresses the Oromo population movement and the wars between the Christian kingdom and the Muslim sultanates
The 1960s was a crucial decade in the development of Ethiopian historiography as history emerged as an academic discipline with the opening of the Department of History in 1963 at the then Haile Selassie I University (HSIU)
The decolonization of African historiography required new methodological approach (tools of investigation) to the study of the past that involved a critical use of oral data and tapping the percepts of ancillary disciplines like archeology, anthropology and linguistics
Foundational research was done at the School of Oriental and African Studies (SOAS) in London and the Department of History at the University of Wisconsin-Madison
African universities have, despite the instabilities of politics and civil war in many areas, trained their own scholars and sent many others overseas for training who eventually published numerous works on different aspects of the region's history