The creation of the modern border of Ethiopia and Eritrea is rooted in the late 19th century, when the Italian shipping company claimed the northern end of Assab Bay in March 1870.
[1][2] After the death of Yohannes, Italian General Oreste Baratieri occupied the highlands along with the Eritrean coast, and proclaimed Eritrea as one of Italy's colonies.
[3][4] On 2 May 1889, the Treaty of Wuchale was signed between Ethiopia under Emperor Menelik II and Italy that recognized the formation of Italian Eritrea.
In the 1960s and 1970s, the armed movement of Eritrea continued offensive tactics towards the Ethiopian government until the 1974 coup d'état against Emperor Haile Selassie.
A border conflict was ignited no less than some months between Eritrea and Ethiopia in Badme after the Eritrean mechanized force penetrated the town, and fighting continued between Tigrayan militia and the security police.