Human settlement in Ethiopia dates back to ancient times. Fossilized remains of the earliest ancestors to the human species, discovered in Ethiopia, have been assigned dates as long ago as 5.9 million years. Together with Eritrea and the southeastern part of the Red Sea coast of Sudan (Beja lands), it is considered the most likely location of the land known to the ancient Egyptians as Punt (or "Ta Netjeru," meaning land of the Gods), whose first mention dates to the twenty-fifth century BC.
The ruins of the temple at Yeha dates to the 7th or 8th century BC.Around the eighth century BC, a kingdom known as Dʿmt was established in northern Ethiopia and Eritrea, with its capital at Yeha in northern Ethiopia. Most modern historians consider this civilization to be a native African one, although Sabaean-influenced due to the latter's hegemony of the Red Sea, while others view Dʿmt as the result of a mixture of "culturally superior" Sabaeans and indigenous peoples. However, Ge'ez, the ancient Semitic language of Ethiopia, is now thought not to have derived from Sabaean (also South Semitic). There is evidence of a Semitic-speaking presence in Ethiopia and Eritrea at least as early as 2000 BC. Sabaean influence is now thought to have been minor, limited to a few localities, and disappearing after a few decades or a century, perhaps representing a trading or military colony in some sort of symbiosis or military alliance with the Ethiopian civilization of Dʿmt or some other proto-Aksumite state.
After the fall of Dʿmt in the fourth century BC, the plateau came to be dominated by smaller successor kingdoms, until the rise of one of these kingdoms during the first century BC, the Aksumite Kingdom, ancestor of medieval and modern Ethiopia, which was able to reunite the area. They established bases on the northern highlands of the Ethiopian Plateau and from there expanded southward. The Persian religious figure Mani listed Aksum with Rome, Persia, and China as one of the four great powers of his time.
In 316 AD, a Christian philosopher from Tyre, Meropius, embarked on a voyage of exploration along the coast of Africa. He was accompanied by, among others, two Syro-Greeks, Frumentius and his brother Aedesius. The vessel was stranded on the coast, and the natives killed all the travelers except the two brothers, who were taken to the court and given positions of trust by the monarch. They both practiced the Christian faith in private, and soon converted the queen and several other members of the royal court. Upon the king's death, Frumentius was appointed regent of the realm by the queen, and instructor of her young son, Prince Ezana. A few years later, upon Ezana's coming of age, Aedesius and Frumentius left the kingdom, the former returning to Tyre where he was ordained, and the latter journeying to Alexandria. Here, he consulted Athanasius, who ordained him and appointed him Bishop of Aksum. He returned to the court and baptized the King Ezana, together with many of his subjects, and in short order Christianity was proclaimed the official state religion again. For this accomplishment, he received the title "Abba Selama" ("Father of peace").
Bete Giyorgis from above, one of the rock-hewn churches of Lalibela.At various times, including a fifty-year period in the sixth century, Aksum controlled most of modern-day Yemen and some of southern Saudi Arabia just across the Red Sea, as well as controlling southern Egypt, northern Sudan, northern Ethiopia, Eritrea, Djibouti, and northern Somalia.
The line of rulers descended from the Aksumite kings was broken several times: first by the Jewish (unknown/or pagan) Queen Gudit around 950 (or possibly around 850, as in Ethiopian histories). It was then interrupted by the Zagwe dynasty; it was during this dynasty that the famous rock-hewn churches of Lalibela were carved under King Lalibela, allowed by a long period of peace and stability.[
Taken from wikipedia