Question: What is the least popular official language of the country where the organization that intervened with mediation for the governments was located?

<P0-S0> the name evolved during the middle ages from gallaecia, sometimes written galletia, to gallicia. <P0-S1> in the 13th century, with the written emergence of the galician language, galiza became the most usual written form of the name of the country, being replaced during the 15th and 16th centuries by the current form, galicia, which coincides with the castilian spanish name. <P0-S2> the historical denomination galiza became popular again during the end of the 19th and the first three-quarters of the 20th century, being still used with some frequency today, although not by the xunta de galicia, the local devolved government. <P0-S3> the royal galician academy, the institution responsible for regulating the galician language, whilst recognizing it as a legitimate current denomination, has stated that the only official name of the country is galicia. <SEP> <P1-S0> There were several border conflicts between Colombia and Peru in the early part of the 20th century, and in 1922, their governments signed the Salomón-Lozano Treaty in an attempt to resolve them. <P1-S1> As part of this treaty, the border town of Leticia and its surrounding area was ceded from Peru to Colombia, giving Colombia access to the Amazon River. <P1-S2> On 1 September 1932, business leaders from Peruvian rubber and sugar industries who had lost land, as a result, organised an armed takeover of Leticia. <P1-S3> At first, the Peruvian government did not recognise the military takeover, but President of Peru Luis Sánchez Cerro decided to resist a Colombian re-occupation. <P1-S4> The Peruvian Army occupied Leticia, leading to an armed conflict between the two nations. <P1-S5> After months of diplomatic negotiations, the governments accepted mediation by the League of Nations, and their representatives presented their cases before the Council. <P1-S6> A provisional peace agreement, signed by both parties in May 1933, provided for the League to assume control of the disputed territory while bilateral negotiations proceeded. <P1-S7> In May 1934, a final peace agreement was signed, resulting in the return of Leticia to Colombia, a formal apology from Peru for the 1932 invasion, demilitarisation of the area around Leticia, free navigation on the Amazon and Putumayo Rivers, and a pledge of non-aggression. <SEP> <P2-S0> Switzerland has four official languages: principally German (63.5% total population share, with foreign residents, in 2013); French (22.5%) in the west; and Italian (8.1%) in the south. <P2-S1> The fourth official language, Romansh (0.5%), is a Romance language spoken locally in the southeastern trilingual canton of Graubünden, and is designated by Article 4 of the Federal Constitution as a national language along with German, French, and Italian, and in Article 70 as an official language if the authorities communicate with persons who speak Romansh. <P2-S2> However, federal laws and other official acts do not need to be decreed in Romansh. <SEP> <P3-S0> A large number of international institutions have their seats in Switzerland, in part because of its policy of neutrality. <P3-S1> Geneva is the birthplace of the Red Cross and Red Crescent Movement and the Geneva Conventions and, since 2006, hosts the United Nations Human Rights Council. <P3-S2> Even though Switzerland is one of the most recent countries to have joined the United Nations, the Palace of Nations in Geneva is the second biggest centre for the United Nations after New York, and Switzerland was a founding member and home to the League of Nations. <SEP> <P4-S0> slavic standard languages which are official in at least one country: belarusian, bosnian, bulgarian, croatian, czech, macedonian, montenegrin, polish, russian, serbian, slovak, slovene, and ukrainian. <P4-S1> the alphabet depends on what religion is usual for the respective slavic ethnic groups. <P4-S2> the orthodox use the cyrillic alphabet and the roman catholics use latin alphabet, the bosniaks who are muslims also use the latin. <P4-S3> few greek roman and roman catholics use the cyrillic alphabet however. <P4-S4> the serbian language and montenegrin language uses both cyrillic and latin alphabets. <P4-S5> there is also a latin script to write in belarusian, called the lacinka alphabet.