Please answer the following question: Information:  - 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.  - Uk (   ; italics :   ) is a digraph of the early Cyrillic alphabet , although commonly considered and used as a single letter . It is a combination of the Cyrillic letters  and  or less frequently O and  . To save space , it was often written as a vertical ligature (   ) , called `` monograph Uk '' . In modern times ,    has been replaced by the simple    .  - The Early Cyrillic alphabet is a writing system that was developed during the late ninth century on the basis of the Greek alphabet for the Orthodox Slavic population in Europe. It was developed in the Preslav Literary School in the First Bulgarian Empire in order to write the Old Church Slavonic language. The modern Cyrillic script is still used primarily for Slavic languages, and for Asian languages that were under Russian cultural influence during the 20th century. History. The earliest form of manuscript Cyrillic, known as "ustav," was based on Greek uncial script, augmented by ligatures and by letters from the Glagolitic alphabet for consonants not found in Greek.  - Old Church Slavonic, also known as Old Church Slavic (often abbreviated to OCS; self-name , "slovnsk jzyk"), was the first Slavic literary language. The 9th-century Byzantine missionaries Saints Cyril and Methodius of Slavic, Greek descent, or both, are credited with standardizing the language and using it in translating the Bible and other Ancient Greek ecclesiastical texts as part of the Christianization of the Slavs. It is thought to have been based primarily on the dialect of the 9th century Byzantine Slavs living in the Province of Thessalonica (now in Greece). It played an important role in the history of the Slavic languages and served as a basis and model for later Church Slavonic traditions, and some Eastern Orthodox and Eastern Catholic churches use this later Church Slavonic as a liturgical language to this day. As the oldest attested Slavic language, OCS provides important evidence for the features of Proto-Slavic, the reconstructed common ancestor of all Slavic languages. History. The language was standardized for the mission of the two apostles to Great Moravia in 863 (see Glagolitic alphabet for details). For that purpose, Cyril and his brother Methodius started to translate religious literature to Old Church Slavonic, allegedly based on the Slavic dialects spoken in the hinterland of their hometown, Thessaloniki, in the today's Greece.  - Asia is Earth's largest and most populous continent, located primarily in the eastern and northern hemispheres and sharing the continental landmass of Eurasia with the continent of Europe. Asia covers an area of , about 30% of Earth's total land area and 8.7% of the Earth's total surface area. The continent, which has long been home to the majority of the human population, was the site of many of the first civilizations. Asia is notable for not only its overall large size and population, but also dense and large settlements as well as vast barely populated regions within the continent of 4.4 billion people.  - 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 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.  - The Greek alphabet has been used to write the Greek language since the late 9th century BC or early 8th century BC It was derived from the earlier Phoenician alphabet, and was the first alphabetic script to have distinct letters for vowels as well as consonants. It is the ancestor of the Latin and Cyrillic scripts. Apart from its use in writing the Greek language, in both its ancient and its modern forms, the Greek alphabet today also serves as a source of technical symbols and labels in many domains of mathematics, science and other fields.  - 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.    After reading the paragraphs above, we are interested in knowing the entity with which 'uk ' exhibits the relationship of 'part of'. Find the answer from the choices below.  Choices: - 8th century  - 8th century bc  - 9th century  - asia  - bible  - black sea  - church  - cyrillic script  - earth  - eastern europe  - empire  - eurasia  - europe  - greek alphabet  - history  - january  - landmass  - language  - name  - order  - part  - population  - river  - russian  - school  - slavic languages  - slavs  - system  - writing system
Answer:
cyrillic script