Menelik II, baptised as Sahle Maryam was king of Shewa from 1866 to 1889 and Emperor of Ethiopia from 1889 to his death in 1913. At the height of his internal power and external prestige, the process of territorial expansion and creation of the modern empire-state was completed by 1898.

The First Italo-Ethiopian War, also referred to as the First Italo-Abyssinian War, or simply in Italy as the Abyssinian War, was a war fought between Italy and Ethiopia from 1895 to 1896. It originated from the disputed Treaty of Wuchale, which the Italians claimed turned Ethiopia into an Italian protectorate. Full-scale war broke out in 1895, with Italian troops from Italian Eritrea achieving initial successes against Tigrayan warlords at Coatit, Senafe and Debra Ailà, until they were reinforced by a large Ethiopian army led by Emperor Menelik II. The Italian defeat came about after the Battle of Adwa, where the Ethiopian army dealt the heavily outnumbered Italian soldiers and Eritrean askaris a decisive blow and forced their retreat back into Eritrea. The war concluded with the Treaty of Addis Ababa. Because this was one of the first decisive victories by African forces over a European colonial power, this war became a preeminent symbol of pan-Africanism and secured Ethiopia's sovereignty until the Second Italo-Ethiopian War of 1935–36.