Various components added to the steady impoverishment and decrease of the Assume realm. The Arab venture into Northern Africa remove the realm's admittance to the Red-Sea stream (and to the business sectors which could be reached through it and on which a huge piece of the realm's thriving had been based). There is likewise proof to recommend that a portion of the realm's normal assets, like gold and ivory, had been drained. Next to now is thought about this period of Ethiopian history and researchers even differ on the dates of its start and end.
The political focal point of Ethiopia appears to have bit by bit moved toward the southern and eastern pieces of the Tigray locale in the Post-Aksumite period. A couple of houses of worship here have been probably ascribed to this period, however ensuing variations joined with the powerlessness to acquire consents to lead archeological reviews make dating troublesome. It appears to be likely that places of worship kept on being worked just as slashed (cut) out of rock. A gathering of funerary hypogea (underground loads) in the Hawken plain (in northern Ethiopia) may have been changed into chapels during the post-Aksumite period. This could be the situation for holy places, for example, Abreha-we-Atsbeha (underneath) and Thermos Munro (the artistic creations in these chapels presumably date from a later period). As indicated by nearby oral practices, few iron crosses date to the Assume or Post-Aksumite periods, yet the shortfall of dependable dating strategies and the way that such crosses were created at any rate until the sixteenth century, makes it very hard to confirm these cases.
By the primary portion of the twelfth century, the focal point of force of the Christian Kingdom had moved significantly further south, to the Last area (a historically significant area in north-focal Ethiopia). From their capital Adela, individuals from the Age line (from whom this period takes its name), governed over a domain which extended from quite a bit of current Eritrea to northern and focal Ethiopia. While restricted proof about their capital exists, the places of worship of Lalibela—a town which takes its name from the Sage ruler credited with its establishing—remain as a demonstration of the creative accomplishments of this period