The Caucasus ( ) is a geographical region spanning Eastern Europe and Western Asia. It is situated between the Black Sea and the Caspian Sea, comprising parts of Southern Russia, Georgia, Armenia, and Azerbaijan. The Caucasus Mountains, including the Greater Caucasus range, have conventionally been considered as a natural barrier between Europe and Asia, bisecting the Eurasian landmass. Mount Elbrus, Europe's highest mountain, is situated in the Western Caucasus area near the Russian-Georgian border. On the southern side, the Lesser Caucasus includes the Javakheti Plateau and the Armenian highlands.

The Caucasus is divided into the North Caucasus and South Caucasus, although the Western Caucasus also exists as a distinct geographic space within the North Caucasus. The Greater Caucasus mountain range in the north is mostly shared by Russia and Georgia as well as the northernmost parts of Azerbaijan. The Lesser Caucasus mountain range in the south is mostly located on the territory of southern Georgia, Armenia, and Azerbaijan. The region is known for its linguistic diversity: aside from Indo-European and Turkic languages, the Kartvelian, Northwest Caucasian, and Northeast Caucasian language families are indigenous to the area.

Origin of the name Pliny the Elder's Natural History (77–79 AD) derives the name of the Caucasus from a Scythian name, Croucasis, which supposedly means 'shimmering with snow'.Pliny the Elder, Natural History, vi.(19).50 . German linguist Paul Kretschmer notes that the Latvian word kruvesis also means 'frozen mud'.

Isidore of Seville's Etymologies () also says the name means shining white like snow:

In the Tale of Past Years (1113 AD), it is stated that Old East Slavic Кавкасийскыѣ горы (Kavkasijskyě gory) came from Ancient Greek Καύκασος (Kaúkasos), which, according to M. A. Yuyukin, is a compound word that can be interpreted as the 'mountain of the seagull(s)' (καύ-: καύαξ, καύηξ, -ηκος, κήξ, κηϋξ 'a kind of seagull' + the reconstructed *κάσος 'mountain' or 'rock' richly attested both in place and personal names).

In Georgian tradition, the term Caucasus is derived from Caucas ( Ḳavḳasosi), the son of the Biblical Togarmah and legendary forefather of the Nakh peoples.

According to German philologists Otto Schrader and Alfons A. Nehring, the Ancient Greek word Καύκασος (Kaukasos) is connected to Gothic hauhs 'high' as well as Lithuanian kaũkas 'hillock' and kaukarà 'hill, top', Russian куча 'heap'. British linguist Adrian Room claims that *kau- also means 'mountain' in Pelasgian, though this is speculative given that Pelasgian is so poorly known.

Toponyms

The term Caucasus is not only used for the mountains themselves but also includes North Caucasus (which is part of the Russian Federation) and South Caucasus. According to Alexander Mikaberidze, Transcaucasia is a "Russo-centric" term.

In Middle Persian sources of the Sasanian era, the Caucasus range was referred to as Kaf Kof. The term resurfaced in Iranian tradition later on in a variant form when Ferdowsi, in his Shahnameh, referred to the Caucasus mountains as Kōh-i Kāf. "Most of the modern names of the Caucasus originate from the Greek Kaukasos (Lat., Caucasus) and the Middle Persian Kaf Kof".

"The earliest etymon" of the name Caucasus comes from Kaz-kaz, the Hittite designation of the "inhabitants of the southern coast of the Black Sea".

It was also noted that in Nakh Ков гас (Kov gas) means "gateway to steppe".Bolatojha J. "Древняя родина Кавкасов [The Ancient Homeland of the Caucasus]", p. 49, 2006.

Political geography The North Caucasus region is also known as the Ciscaucasus, whereas the South Caucasus region is alternatively known as the Transcaucasus.

The North Caucasus contains most of the Greater Caucasus mountain range. It consists of Southern Russia, mainly the North Caucasian Federal District's autonomous republics and the Krais in Southern Russia, and the northernmost parts of Georgia and Azerbaijan. The North Caucasus lies between the Black Sea to its west, the Caspian Sea to its east, and borders the Southern Federal District to its north. The two Federal Districts are collectively referred to as "Southern Russia".

The South Caucasus borders the Greater Caucasus range and Southern Russia to its north, the Black Sea and Turkey to its west, the Caspian Sea to its east, and Iran to its south. It contains the Lesser Caucasus mountain range and surrounding lowlands. All of Armenia, Azerbaijan (excluding the northernmost parts), and Georgia (excluding the northernmost parts) are in the South Caucasus.

The watershed along the Greater Caucasus range is considered by some sources to be the dividing line between Europe and Southwest Asia. According to that, the highest peak in the Caucasus, Mount Elbrus (5,642 meters) located in western Ciscaucasus, is considered the highest point in Europe. The Kuma-Manych Depression, the geologic depression that divides the Russian Plain from the North Caucasus foreland is often regarded by classical and non-British sources as the natural and historical boundary between Europe and Asia. Another opinion is that the rivers Kura and Rioni mark this border, or even that of the river Aras.

The Caucasus is a linguistically, culturally and geographically diverse region. The nation states that compose the Caucasus today are the post-Soviet states Georgia (including Adjara and Abkhazia), Azerbaijan (including Nakhchivan), Armenia, and the Russian Federation. The Russian divisions include Dagestan, Chechnya, Ingushetia, , , , Adygea, Krasnodar Krai, and Stavropol Krai, in clockwise order.

Two territories in the region claim independence but are recognized as such by only a handful of entities: Abkhazia, and South Ossetia. Abkhazia and South Ossetia are largely recognized by the world community as part of Georgia.

Demographics

The region has many different languages and language families. There are more than 50 ethnic groups living in the region. No fewer than three language families are unique to the area, such as Kartvelian languages spoken in Georgia. In addition, Indo-European languages, such as East Slavic, Armenian and Ossetian, and Turkic languages, such as Azerbaijani, Kumyk language and Karachay–Balkar, are spoken in the area. Russian is used as a lingua franca, most notably in the North Caucasus, though in the south its reach has waned since the collapse of the USSR.

In the North Caucasus, the Russian krais of Krasnodar and Stavropol, as well as North Ossetia–Alania are predominantly Eastern Orthodox Christians, while the remaining regions are Sunni Muslim. In the southern part of the region, Georgia is predominantly Orthodox Christian, Armenia is Armenian Apostolic, while Azerbaijan is Shia Muslim.

History

Located on the peripheries of various large empires, the region has been an arena for political, military, religious, and cultural rivalries and expansionism for centuries.

Prehistory

The territory of the Caucasus region was inhabited by Homo erectus since the Paleolithic Era. In 1991, early Hominini fossils dating back 1.8 million years were found at the Dmanisi archaeological site in Georgia. Scientists now classify the assemblage of fossil skeletons as the subspecies Homo erectus georgicus.

The site yields the earliest unequivocal evidence for the presence of early humans outside the African continent;Vekua, A., Lordkipanidze, D., Rightmire, G. P., Agusti, J., Ferring, R., Maisuradze, G., et al. (2002). A new skull of early Homo from Dmanisi, Georgia. Science, 297:85–9. and the Dmanisi skulls are the five oldest hominins ever found outside Africa.

Antiquity Kura–Araxes culture from about 4000 BC until about 2000 BC enveloped a vast area of approximately 1,000 km by 500 km, and mostly encompassed, on modern-day territories, the Southern Caucasus (except western Georgia), northwestern Iran, the northeastern Caucasus, eastern Turkey, and as far as Syria.

Under Ashurbanipal (669–627 BC), the boundaries of the Assyrian Empire reached as far as the Caucasus Mountains. Later ancient kingdoms of the region included Armenia, Albania, Colchis and Iberia, among others. These kingdoms were later incorporated into various Iranian empires, including Media, the Achaemenid Empire, Parthia, and the Sassanid Empire, who would altogether rule the Caucasus for many hundreds of years. In 95–55 BC, under the reign of the Armenian king Tigranes the Great, the Kingdom of Armenia included Kingdom of Armenia, vassals Iberia, Albania, Parthia, Atropatene, Mesopotamia, Cappadocia, Cilicia, Syria, Nabataean kingdom, and Judea. By the time of the first century BC, Zoroastrianism had become the dominant religion of the region; however, the region would go through two other religious transformations. Owing to the strong rivalry between Persia and Rome, and later Byzantium. The Romans first arrived in the region in the 1st century BC with the annexation of the kingdom of Colchis, which was later turned into the province of Lazicum. The next 600 years was marked by a conflict between Rome and Sassanid Empire for the control of the region. In western Georgia the eastern Roman rule lasted until the Middle Ages.

Middle Ages

As the Arsacid dynasty of Armenia (an eponymous branch of the Arsacid dynasty of Parthia) was the first nation to adopt Christianity as state religion (in 301 AD), and Caucasian Albania and Georgia had become Christian entities, Christianity began to overtake Zoroastrianism and pagan beliefs. With the Muslim conquest of Persia, large parts of the region came under the rule of the Arabs, and Islam penetrated the region.

In the 10th century, the Alans (proto-Ossetians)Аланы , Great Soviet Encyclopedia founded the Kingdom of Alania, that flourished in the Northern Caucasus, roughly in the location of latter-day Circassia and modern North Ossetia–Alania, until its destruction by the Mongol invasion in 1238–39.

During the Middle Ages, Bagratid Armenia, the Kingdom of Tashir-Dzoraget, the Kingdom of Syunik, the Principality of Khachen and the greater local Armenian population faced multiple threats after the fall of the antiquated Kingdom of Armenia. Caucasian Albania maintained close ties with Armenia and the Church of Caucasian Albania shared the same Christian dogmas with the Armenian Apostolic Church and had a tradition of their Catholicos being ordained through the Patriarch of Armenia.

In the 12th century, the Georgian king David the Builder drove the Muslims out of the Caucasus and made the Kingdom of Georgia a strong regional power. In 1194–1204 Georgian Queen Tamar's armies crushed new Seljuk Turkish invasions from the southeast and south and launched several successful campaigns into Seljuk Turkish-controlled Southern Armenia. The Georgian Kingdom continued military campaigns in the Caucasus region. As a result of her military campaigns and the temporary fall of the Byzantine Empire in 1204, Georgia became the strongest Christian state in the whole Near East area, encompassing most of the Caucasus stretching from Northern Iran and Northeastern Turkey to the North Caucasus.

In the subsequent centuries, the Caucasus region was conquered by the Ottomans, Turco-Mongols, as well as, once again, Iran.

Modern period