Question: When was Eritrea annexed by the country in which Somali People live along with Kenya, Somalia and the country where Ali Olo is located?

<P0-S0> With an average elevation of 286 metres (938 ft) above sea level, they are situated near the border with Somalia. <P0-S1> The Ali Olo is a mountain Located in the northeast of Ali Sabieh Region in Djibouti. <SEP> <P1-S0> Pan-Somalism is an ideology that advocates the unification of all ethnic Somalis once part of Somali empires such as the Ajuran Empire, the Adal Sultanate, the Gobroon Dynasty and the Dervish State under one flag and one nation. <P1-S1> Somali people in the Horn of Africa are divided among different countries (Somalia, Djibouti, Ethiopia, and northeastern Kenya) that were artificially and some might say arbitrarily partitioned by the former imperial powers. <P1-S2> The Siad Barre regime actively promoted Pan-Somalism, which eventually led to the Ogaden War between Somalia on one side, and Ethiopia, Cuba and the Soviet Union on the other. <SEP> <P2-S0> british somaliland became independent on 26 june 1960 as the state of somaliland, and the trust territory of somalia (the former italian somaliland) followed suit five days later. <P2-S1> on 1 july 1960, the two territories united to form the somali republic, albeit within boundaries drawn up by italy and britain. <P2-S2> a government was formed by abdullahi issa mohamud and muhammad haji ibrahim egal other members of the trusteeship and protectorate governments, with haji bashir ismail yusuf as president of the somali national assembly, aden abdullah osman daar as the president of the somali republic and abdirashid ali shermarke as prime minister (later to become president from 1967 to 1969). <P2-S3> on 20 july 1961 and through a popular referendum, the people of somalia ratified a new constitution, which was first drafted in 1960. in 1967, muhammad haji ibrahim egal became prime minister, a position to which he was appointed by shermarke. <P2-S4> egal would later become the president of the autonomous somaliland region in northwestern somalia. <SEP> <P3-S0> djibouti ( (listen) jih-boo-tee; afar: yibuuti, arabic: جيبوتي‎ jībūtī, french: djibouti, somali: jabuuti, officially the republic of djibouti) is a country located in the horn of africa. <P3-S1> it is bordered by eritrea in the north, ethiopia in the west and south, and somalia in the southeast. <P3-S2> the remainder of the border is formed by the red sea and the gulf of aden at the east. <P3-S3> djibouti occupies a total area of 23,200 km2 (8,958 sq mi). <P3-S4> the state of djibouti is predominantly inhabited by two ethnic groups, the somali and the afar people, the somalis being the major ethnic group of the country. <SEP> <P4-S0> Eritrea was annexed by Ethiopia in 1953 (nominally within a federation until 1962) and an Eritrean Liberation Front formed in 1960. <P4-S1> During the Middle Ages, the Eritrea region was known as Medri Bahri ("sea-land"). <P4-S2> The name Eritrea is derived from the ancient Greek name for Red Sea (Ἐρυθρὰ Θάλασσα Erythra Thalassa, based on the adjective ἐρυθρός erythros "red"). <P4-S3> It was first formally adopted in 1890, with the formation of Italian Eritrea (Colonia Eritrea). <P4-S4> The territory became the Eritrea Governorate within Italian East Africa in 1936. <P4-S5> Eritrea gained independence following the 1993 referendum, and the name of the new state was defined as State of Eritrea in the 1997 constitution. <P4-S6> [citation needed]