section_path: History/Middle Ages
section_name: Middle Ages
paragraph_text: Middle Ages
  
  The kingdom adopted the name "Ethiopia" during the reign of Ezana in the 4th century. After the conquest of Kingdom of Kush in 330, the Aksumite territory reached its peak between the 5th and 6th centuries. This period was interrupted by several incursions into the South Arabian protectorate, including Jewish Dhu Nuwas of the Himyarite Kingdom and the Aksumite–Persian wars. In 575, the Aksumites besieged and retook Sana'a following the assassination of its governor Sayf ibn Dhī Yazan. The Red Sea was left to the Rashidun Caliphate in 646, and the port city of Adulis was plundered by Arab Muslims in the 8th century; along with irrevocable land degradation, claimed climate change and sporadic rainfall precipitation from 730 to 760, these factors likely caused the kingdom to decline in power as part of an important trade route. Aksum came to an end in 960 when Queen Gudit defeated the last king of Aksum. In response, the remnant of the Aksumite population to shift into the southern region and establish the Zagwe dynasty, changing its capital to Lalibela. Zagwe's rule ended when an Amhara noble man Yekuno Amlak revolted against King Yetbarak and established the Ethiopian Empire (known by exonym "Abyssinia").
  
  The Ethiopian Empire initiated territorial expansion under the leadership of Amda Seyon I. He launched campaigns against his Muslim adversaries to the east, resulting in a significant shift in the balance of power in favor of the Christians for the next two centuries. After Amda Seyon's successful eastern campaigns, most of the Muslim principalities in the Horn of Africa came under the suzerainty of the Ethiopian Empire. Stretching from Gojjam to the Somali Coast in Zelia. Among these Muslim entities was the Sultanate of Ifat. During the reign of Emperor Zara Yaqob, the Ethiopian Empire reached its pinnacle. His rule was marked by the consolidation of territorial acquisitions from earlier rulers, the oversight of the construction of numerous churches and monasteries, the active promotion of literature and art, and the strengthening of central imperial authority. Ifat's successor, the Adal Sultanate, tried to conquer Ethiopia during the Ethiopian–Adal War, but was ultimately defeated at the 1543 Battle of Wayna Daga.
  
  By the 16th century, an influx of migration by ethnic Oromo into northern parts of the region fragmented the empire's power. Embarking from present-day Guji and Borena Zone, the Oromos were largely motivated by several folkloric conceptions—beginning with Moggaasaa and Liqimssa —many of whom related to their raids. This persisted until gada of Meslé. According to Abba Bahrey, the earliest expansion occurred under Emperor Dawit II (luba Melbah), when they encroached to Bale before invading Adal Sultanate.
  
  Ethiopia saw major diplomatic contact with Portugal from the 17th century, mainly related to religion. Beginning in 1555, Portuguese Jesuits attempted to develop Roman Catholicism as the state religion. After several failures, they sent several missionaries in 1603, including the most influential, Spanish Jesuit Pedro Paez. Under Emperor Susenyos I, Roman Catholicism became the state religion of the Ethiopian Empire in 1622. This decision caused an uprising by the Orthodox populace.