Russian Civil War (Transcaucasian Democratic Federative Republic) from 9 April 1918 to 26 May 1918, and under the Soviet rule (Transcaucasian SFSR) from 12 March 1922 to 5 December 1936. Following the dissolution of the Soviet Union in 1991, Georgia, Azerbaijan and Armenia became independent nations. The region has been subject to various territorial disputes since the collapse of the Soviet Union, leading to the First Nagorno-Karabakh War (1988–1994), the East Prigorodny Conflict (1989–1991), the War in Abkhazia (1992–93), the First Chechen War (1994–1996), the Second Chechen War (1999–2009), Russo-Georgian War (2008), and the Second Nagorno-Karabakh War (2020). Mythology In Greek mythology, the Caucasus was one of the pillars supporting the world. After presenting man with the gift of fire, Prometheus (or Amirani in the Georgian version) was chained there by Zeus, to have his liver eaten daily by an eagle as punishment for defying Zeus' wish to keep the "secret of fire" from humans. In Persian mythology, the Caucasus might be associated with the mythic Mount Qaf which is believed to surround the known world. It is the battlefield of Saoshyant and the nest of the Simurgh. The Roman poet Ovid placed the Caucasus in Scythia and depicted it as a cold and stony mountain which was the abode of personified hunger. The Greek hero Jason sailed to the west coast of the Caucasus in pursuit of the Golden Fleece, and there met Medea, a daughter of King Aeëtes of Colchis. Later folklore The Caucasus has a rich folklore tradition. This tradition has been preserved orally—necessitated by the fact that for most of the languages involved there was no alphabet until the early twentieth century—and only began to be written down in the late nineteenth century. One important tradition is that of the Nart sagas, which tell stories of a race of ancient heroes called the Narts. These sagas include such figures as Satanaya, the mother of the Narts, Sosruquo a shape changer and trickster, Tlepsh a blacksmith god, and Batradz, a mighty hero. The folklore of the Caucasus shows ancient Iranian Zoroastrian influence, involve battles with ancient Goths, Huns and Khazars, and contain many connections with ancient Indian, Norse Scandinavian, and Greek cultures. Links between Greek mythology and subsequent folklore Caucasian folklore contains many links with the myths of the ancient Greeks. There are resemblances between the mother goddess Satanaya and the Greek goddess of love Aphrodite. The