in 1433 - Zara Yaqob of Amhara estabilished the Kingdom of Bahr Negash/Medri Bahri in Eritrea
The first time the title Bahr Negash appears is during the reign of emperor Zara Yaqob (r. 1433-1468), after his reconquest on behalf of the Abysinnian Empire, who perhaps even introduced that office.[6] His chronicle explains how he put much effort into increasing the power of that office, placing the Bahr Negash above other local chiefs and eventually making him the sovereign of a territory covering the Shire, a region south of the Mareb river in what is now Ethiopia, The highlands(ከበሳ) of what is now Eritrea including Hamasien, Seraye,
To strengthen the imperial presence in Medri Bahri, Zara Yaqob also established a military colony consisting of Maya Ethiopian warriors from the south of his realm.[6]
to be edited updated for askari sabur of adwa