Ethiopia is a country.
The African Union ( AU ) is a continental union consisting of all 55 countries on the African continent . Ethiopia ( [ ˌiːθiˈoʊpiə ] ኢትዮጵያ , , ) , officially the Federal Democratic Republic of Ethiopia ( የኢትዮጵያ ፌዴራላዊ ዲሞክራሲያዊ ሪፐብሊክ , yeʾĪtiyoṗṗya Fēdēralawī Dēmokirasīyawī Rīpebilīk ) , is a country located in the Horn of Africa . With over 100 million inhabitants , Ethiopia is the most populous landlocked country in the world , as well as the second-most populous nation on the African continent after Nigeria . The Group of 24 ( G24 ) , a chapter of the G-77 , was established in 1971 to coordinate the positions of developing countries on international monetary and development finance issues and to ensure that their interests were adequately represented in negotiations on international monetary matters .