Question: When was Eritrea annexed by the largest troop contributor to the peacekeeping mission of the organization that approved the Korean War armistice that officially declared a ceasefire?

<P0-S0> korea was occupied and declared a japanese protectorate following the japan -- korea treaty of 1905, and officially annexed in 1910 through the annexation treaty. <SEP> <P1-S0> by adopting resolution 1094(1997) on efforts towards peace in central america, the security council authorized on 20 january 1997 the attachment of a group of 155 military observers and requisite medical personnel to minugua for a three-month period, operational as of 3 march 1997. the task of the observer group were verification of the agreement on the definitive ceasefire. <P1-S1> while retaining its acronym minugua, the peacekeeping mission's name was changed to united nations verification mission in guatemala as of 1 april 1997 in order to reflect the new mandate. <P1-S2> in a presidential statement of 5 march 1997 (s/prst/1997/9), the council welcomed the deployment on 3 march 1997 of the group of united nations military observers attached to the united nations mission for the verification of human rights and of compliance with the commitments of the comprehensive agreement on human rights in guatemala (minugua) for the purposes of verification of the oslo ceasefire agreement and reaffirmed its full support for the peace process in guatemala. <SEP> <P2-S0> During the Middle Ages, the Eritrea region was known as Medri Bahri ("sea-land"). <P2-S1> The name Eritrea is derived from the ancient Greek name for Red Sea (Ἐρυθρὰ Θάλασσα Erythra Thalassa, based on the adjective ἐρυθρός erythros "red"). <P2-S2> It was first formally adopted in 1890, with the formation of Italian Eritrea (Colonia Eritrea). <P2-S3> The territory became the Eritrea Governorate within Italian East Africa in 1936. <P2-S4> Eritrea was annexed by Ethiopia in 1953 (nominally within a federation until 1962) and an Eritrean Liberation Front formed in 1960. <P2-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. <P2-S6> [citation needed] <SEP> <P3-S0> In 1952, the United States elected a new president, and on 29 November 1952, the president-elect, Dwight D. Eisenhower, went to Korea to learn what might end the Korean War. <P3-S1> With the United Nations' acceptance of India's proposed Korean War armistice, the KPA, the PVA, and the UN Command ceased fire with the battle line approximately at the 38th parallel. <P3-S2> Upon agreeing to the armistice, the belligerents established the Korean Demilitarized Zone (DMZ), which has since been patrolled by the KPA and ROKA, United States, and Joint UN Commands. <SEP> <P4-S0> 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). <P4-S1> In June 2013. <P4-S2> 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). <P4-S3> As of 28 February 2015, 120 countries were contributing a total of 104,928 personnel in Peacekeeping Operations, with Bangladesh leading the tally (9446). <P4-S4> 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.