Zara Yaqob in the context of Geʽez

The Ethiopian Empire, historically known as Abyssinia or simply Ethiopia, was a sovereign state that encompassed the present-day territories of Ethiopia and Eritrea. It existed from the establishment of the Solomonic dynasty by Yekuno Amlak around 1270 until the 1974 coup d'état by the Derg, which ended the reign of the final Emperor, Haile Selassie. In the late 19th century, under Emperor Menelik II, the empire expanded significantly to the south, and in 1952, Eritrea was federated under Selassie's rule. Despite being surrounded by hostile forces throughout much of its history, the empire maintained a kingdom centered on its ancient Christian heritage.

Founded in 1270 by Yekuno Amlak, who claimed to descend from the last Aksumite king and ultimately King Solomon and the Queen of Sheba, it replaced the Agaw kingdom of the Zagwe. While initially a rather small and politically unstable entity, the Empire managed to expand significantly under the crusades of Amda Seyon I (1314–1344) and Dawit I (1382–1413), temporarily becoming the dominant force in the Horn of Africa. The Ethiopian Empire would reach its peak during the long reign of Emperor Zara Yaqob (1434–1468). He consolidated the conquests of his predecessors, built numerous churches and monasteries, encouraged literature and art, centralized imperial authority by substituting regional warlords with administrative officials, and significantly expanded his hegemony over adjacent Islamic territories.

Beginning with the Kingdom of Aksum, Ethiopia's territory evolved significantly through conquest of the lands surrounding it. Strong Aksumite trading partnerships with other world powers gave prominence to its territorial expansion. In 330, Aksum besieged the Nubian city of Meroë, marking the beginning of its great expansion. It finally declined after the rise of Islamic dominion in South Arabia, and it ultimately collapsed in the 10th century.

The Zagwe dynasty emerged and ruled until 1270, when Amhara-Shewan Yekuno Amlak revolted against the last king, Yetbarak, commencing the Solomonic dynasty-led Ethiopian Empire. The empire reached its greatest extent under the emperors Amda Seyon I and Zara Yaqob. In 1896, Emperor Menelik II’s conquest strongly consolidated Ethiopia’s modern borders while eluding the 19th-century Scramble for Africa and Italian colonialism. Eritrea was annexed by the Ethiopian imperial government under Emperor Haile Selassie in 1952, culminating in the Eritrean War of Independence. Eritrea eventually seceded by referendum during its seizure by the Ethiopian People's Revolutionary Democratic Front (EPRDF) in 1993.