Eritrea , officially the State of Eritrea, is a country in Eastern Africa, with its capital at Asmara. It is bordered by Ethiopia in the south, Sudan in the west, and Djibouti in the southeast. The northeastern and eastern parts of Eritrea have an extensive coastline along the Red Sea. The nation has a total area of approximately 117,600 km (45,406 sq mi), and includes the Dahlak Archipelago and several of the Hanish Islands. Eritrea is a multi-ethnic country with nine recognized ethnic groups. Nine different languages are spoken by the nine recognised ethnic groups, the most widely spoken language is Tigrinya, the others are Tigre, Afar, Beja, Bilen, Kunama, Nara, Arabic and Saho Tigrinya, Arabic, and English serve as the three working languages. Most residents speak languages from the Afroasiatic family, either of the Ethiopian Semitic languages or Cushitic branches. Among these communities, the Tigrinyas make up about 55% of the population, with the Tigre people constituting around 30% of inhabitants. In addition, there are several Nilo-Saharan-speaking Nilotic ethnic groups. Most people in the territory adhere to Christianity or Islam, with a small minority adhering to traditional faiths. The Kingdom of Aksum, covering much of modern-day Eritrea and northern Ethiopia, was established during the first or second century AD. It adopted Christianity around the middle of the fourth century. In medieval times much of Eritrea fell under the Medri Bahri kingdom, with a smaller region being part of Hamasien. The creation of modern-day Eritrea is a result of the incorporation of independent, distinct kingdoms (for example, Medri Bahri and the Sultanate of Aussa) eventually resulting in the formation of Italian Eritrea. After the defeat of the Italian colonial army in 1942, Eritrea was administered by the British Military Administration until 1952. Following the UN General Assembly decision in 1952, Eritrea would govern itself with a local Eritrean parliament, but for foreign affairs and defense, it would enter into a federal status with Ethiopia for ten years.