Question: A large institution uses the universal declaration of human rights. When was Eritrea annexed by the country that is the largest troop contributor to that institution's peace keeping mission?

full_context: Document 1: United Nations peacekeeping: As of 29 February 2016, 124 countries were contributing a total of 105,314 personnel in Peacekeeping Operations, with Ethiopia leading the tally (8,324), followed by India (7,695) and Bangladesh (7,525). In June 2013. Pakistan contributed the highest number overall with 8,186 personnel, followed by India (7,878), Bangladesh (7,799), Ethiopia (6,502), Rwanda (4,686), Nigeria (4,684), Nepal (4,495), Jordan (3,374), Ghana (2,859), and Egypt (2,750). As of 28 February 2015, 120 countries were contributing a total of 104,928 personnel in Peacekeeping Operations, with Bangladesh leading the tally (9446). As of March 2008, in addition to military and police personnel, 5,187 international civilian personnel, 2,031 UN Volunteers and 12,036 local civilian personnel worked in UN peacekeeping missions.
Document 2: Human Rights Day: The date was chosen to honour the United Nations General Assembly's adoption and proclamation, on 10 December 1948, of the Universal Declaration of Human Rights (UDHR), the first global enunciation of human rights and one of the first major achievements of the new United Nations. The formal establishment of Human Rights Day occurred at the 317th Plenary Meeting of the General Assembly on 4 December 1950, when the General Assembly declared resolution 423(V), inviting all member states and any other interested organizations to celebrate the day as they saw fit.
Document 3: Universal Declaration of Human Rights: Universal Declaration of Human Rights Eleanor Roosevelt with the Spanish language version of the Universal Declaration of Human Rights. Created 1948 Ratified 10 December 1948 Location Palais de Chaillot, Paris Author (s) Draft Committee Purpose Human rights
Document 4: List of members of the United Nations Security Council: As of July 2011, there are currently 193 members of the United Nations and five permanent members of the Security Council. The other ten seats are assigned amongst the remaining 188 members. As a result, many members have never been on the Security Council. The following list is a summary of all countries, currently 68 modern nations and three historical ones, that have never been a member of the United Nations Security Council. The three historical UN members listed are Tanganyika, Zanzibar, and the Federal Republic of Yugoslavia.
Document 5: United Nations Population Fund: Contributions from governments and the private sector to UNFPA in 2014 exceeded $1 billion. The amount includes $477 million to the organization’s core resources and $529 million earmarked for specific programs and initiatives.
Document 6: Eritrea: Eritrea (/ˌɛrᵻˈtreɪ.ə/ or /ˌɛrᵻˈtriːə/;, officially the State of Eritrea, is a country in East Africa. With its capital at Asmara, it is bordered by Sudan in the west, Ethiopia in the south, 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 km2 (45,406 sq mi), and includes the Dahlak Archipelago and several of the Hanish Islands. Its name Eritrea is based on the Greek name for the Red Sea (Ἐρυθρὰ Θάλασσα Erythra Thalassa), which was first adopted for Italian Eritrea in 1890.
Document 7: Eritrea: The creation of modern-day Eritrea is a result of the incorporation of independent, distinct kingdoms and sultanates (for example, Medri Bahri and the Sultanate of Aussa) eventually resulting in the formation of Italian Eritrea. In 1947 Eritrea became part of a federation with Ethiopia, the Federation of Ethiopia and Eritrea. Subsequent annexation into Ethiopia led to the Eritrean War of Independence, ending with Eritrean independence following a referendum in April 1993. Hostilities between Eritrea and Ethiopia persisted, leading to the Eritrean–Ethiopian War of 1998–2000 and further skirmishes with both Djibouti and Ethiopia.
Document 8: Universal Declaration of Human Rights: The Universal Declaration of Human Rights (UDHR) was adopted by the United Nations General Assembly at its 3rd session on 10 December 1948 as Resolution 217 at the Palais de Chaillot in Paris, France. Of the then 58 members of the United Nations, 48 voted in favor, none against, eight abstained, and two did n't vote.
Document 9: Human rights in the Philippines: The Philippines is a signatory to the Universal Declaration of Human Rights (UDHR) drafted by the United Nations (UN) in the 1948. The Universal Declaration of Human Rights was adopted, alongside the Genocide Convention and the Convention on the Elimination of All Forms of Racial Discrimination, by the United Nations in response to the tragic and horrendous violations of human rights during the Second World War. The United Nations Charter, a treaty, was created in order to define what roles, powers, and duties the United Nations is allowed to practice in dealing with international relations. Article I of the UN Charter states that the UN aims:
Document 10: Eritrea: In 1922, Benito Mussolini's rise to power in Italy brought profound changes to the colonial government in Italian Eritrea. After il Duce declared the birth of the Italian Empire in May 1936, Italian Eritrea (enlarged with northern Ethiopia's regions) and Italian Somaliland were merged with the just conquered Ethiopia in the new Italian East Africa (Africa Orientale Italiana) administrative territory. This Fascist period was characterized by imperial expansion in the name of a "new Roman Empire". Eritrea was chosen by the Italian government to be the industrial center of Italian East Africa.
Document 11: United Nations Population Fund: In response, the EU decided to fill the gap left behind by the US under the Sandbaek report. According to its Annual Report for 2008, the UNFPA received its funding mainly from European Governments: Of the total income of M845.3 M, $118 was donated by the Netherlands, $67 M by Sweden, $62 M by Norway, $54 M by Denmark, $53 M by the UK, $52 M by Spain, $19 M by Luxembourg. The European Commission donated further $36 M. The most important non-European donor State was Japan ($36 M). The number of donors exceeded 180 in one year.
Document 12: Eritrea: During the Middle Ages, the Eritrea region was known as Medri Bahri ("sea-land"). The name Eritrea is derived from the ancient Greek name for Red Sea (Ἐρυθρὰ Θάλασσα Erythra Thalassa, based on the adjective ἐρυθρός erythros "red"). It was first formally adopted in 1890, with the formation of Italian Eritrea (Colonia Eritrea). The territory became the Eritrea Governorate within Italian East Africa in 1936. Eritrea was annexed by Ethiopia in 1953 (nominally within a federation until 1962) and an Eritrean Liberation Front formed in 1960. Eritrea gained independence following the 1993 referendum, and the name of the new state was defined as State of Eritrea in the 1997 constitution.[citation needed]
Document 13: Military Police of Rio de Janeiro State: Under the United Nations, in cooperation with the Brazilian Army, the Military Police of Rio de Janeiro State has served in Angola, Mozambique, East-Timor, Sudan, and Haiti.
Document 14: Universal Declaration of Human Rights: The Universal Declaration was adopted by the General Assembly as Resolution 217 on 10 December 1948. Of the then 58 members of the United Nations, 48 voted in favor, none against, eight abstained and Honduras and Yemen failed to vote or abstain.
Document 15: Eritrea: The Scottish traveler James Bruce reported in 1770 that Medri Bahri was a distinct political entity from Abyssinia, noting that the two territories were frequently in conflict. The Bahre-Nagassi ("Kings of the Sea") alternately fought with or against the Abyssinians and the neighbouring Muslim Adal Sultanate depending on the geopolitical circumstances. Medri Bahri was thus part of the Christian resistance against Imam Ahmad ibn Ibrahim al-Ghazi of Adal's forces, but later joined the Adalite states and the Ottoman Empire front against Abyssinia in 1572. That 16th century also marked the arrival of the Ottomans, who began making inroads in the Red Sea area.
ground_truth: 1953
sub_queries: who uses the universal declaration of human rights Answer: the United Nations
largest troop contributor to the the United Nations peace keeping mission Answer: Ethiopia
When was Eritrea annexed by Ethiopia ? Answer: 1953