Excerpts from Books and Wikipedia
"Emperor Haile Selassie worked to modernize Ethiopia until the Derg, a communist military junta backed by the Soviet Union, overthrew him in a coup in 1974 and abolished the monarchy. The Derg waged a 16-year civil war with Tigray-Eritrean separatist rebels and Somalia before finally being overthrown by the Ethiopian People's Revolutionary Democratic Front (EPDRF) in 1991. The EPRDF coalition-led government, led by the Tigray People's Liberation Front (TPLF), was an authoritarian regime and brought the country into the current form of ethnic federalism. After Prime Minister Abiy Ahmed came to power 2018, he ousted the EPDRF and substituted it with his Prosperity Party in 2019. While the country has shown amendments of policies to some degree, Abiy's tenure is often characterized as authoritarian and accused of promoting a cult of personality, driving further civil conflict, and exacerbating hostility with TPLF members which led to the Tigray War in 2020." [Wikipedia]