Context: I (named "i" , plural "ies") is the ninth letter and the third vowel in the ISO basic Latin alphabet., I (   ; italics :   ) is a letter used in almost all ancient and modern Cyrillic alphabets . It commonly represents the close front unrounded vowel / i / , like the pronunciation of  i  in `` machine '' , or the near - close near - front unrounded vowel /  / , like the pronunciation of  i  in `` bin '' ., Numerous Cyrillic alphabets are based on the Cyrillic script. The early Cyrillic alphabet was developed in the First Bulgarian Empire during the 9th century AD at the Preslav Literary School by the disciples of the Byzantine theologians Cyril and Methodius. It is the basis of alphabets used in various languages, past and present, in parts of Southeastern Europe and Northern Eurasia, especially those of Slavic origin, and non-Slavic languages influenced by Russian. As of 2011, around 252 million people in Eurasia use it as the official alphabet for their national languages. About half of them are in Russia. Cyrillic is one of the most-used writing systems in the world., The ISO basic Latin alphabet is a Latin-script alphabet and consists of two sets of 26 letters, codified in various national and international standards and used widely in international communication., The Slavic languages (also called Slavonic languages) are the Indo-European languages native to the Slavic peoples, originally from Eastern Europe. They are thought to descend from a proto-language called Proto-Slavic spoken during the Early Middle Ages, which in turn is thought to have descended from the earlier Proto-Balto-Slavic language, linking the Slavic languages to the Baltic languages in a Balto-Slavic group within the Indo-European family., In phonetics, a vowel is a sound in spoken language, with two competing definitions. In the more common phonetic definition, a vowel is a sound pronounced with an open vocal tract, so that the tongue does not touch the lips, teeth, or roof of the mouth, such as the English "ah" or "oh" . There is no build-up of air pressure at any point above the glottis. This contrasts with consonants, such as the English "sh" , which have a constriction or closure at some point along the vocal tract. In the other, phonological definition, a vowel is defined as syllabic, the sound that forms the peak of a syllable. A phonetically equivalent but non-syllabic sound is a semivowel., The First Bulgarian Empire (Old ) was a medieval Bulgarian state that existed in southeastern Europe between the 7th and 11th centuries AD. It was founded circa 681 when Bulgar tribes led by Asparukh moved to the northeastern Balkans. There they secured Byzantine recognition of their right to settle south of the Danube by defeating  possibly with the help of local South Slavic tribes  the Byzantine army led by Constantine IV. At the height of its power, Bulgaria spread from the Danube Bend to the Black Sea and from the Dnieper River to the Adriatic Sea., Bulgaria (tr. '), officially the Republic of Bulgaria (tr. '), is a country in southeastern Europe. It is bordered by Romania to the north, Serbia and Macedonia to the west, Greece and Turkey to the south, and the Black Sea to the east. With a territory of , Bulgaria is Europe's 16th-largest country., The Cyrillic script is a writing system used for various alphabets across eastern Europe and north and central Asia. It is based on the Early Cyrillic, which was developed in the First Bulgarian Empire during the 9th century AD at the Preslav Literary School. It is the basis of alphabets used in various languages, past and present, in parts of southeastern Europe and northern Eurasia, especially those of Slavic origin, and non-Slavic languages influenced by Russian. , around 252 million people in Eurasia use it as the official alphabet for their national languages, with Russia accounting for about half of them. With the accession of Bulgaria to the European Union on 1 January 2007, Cyrillic became the third official script of the European Union, following the Latin script and Greek script., The Preslav Literary School (Pliska Literary School) was the first literary school in the medieval Bulgarian Empire. It was established by Boris I in 885 or 886 in Bulgaria's capital, Pliska. In 893, Simeon I moved the seat of the school from Pliska to the new capital, Preslav., Subject: i , Relation: part_of, Options: (A) army (B) central asia (C) communication (D) country (E) cyrillic script (F) eastern europe (G) empire (H) english (I) eurasia (J) europe (K) family (L) january (M) language (N) latin alphabet (O) latin script (P) mouth (Q) river (R) school (S) slavic languages (T) state (U) the republic (V) thought
Output: cyrillic script