There is also the little problem that Aksum didn't exist until the 1st century BC. After the fall of D'mt (t5th century) there is no major power in Ethiopia until Aksum rises out of a mess of what could losely be called successor states (they rose and fell with pretty amazing rapidity). During most of EB's time frame the north of Ethiopia is dominated by the Ptols and the east by Saba, the interior, as I just mentioned, is pretty much petty warlords and tribes without any large scale political organization.