The South Caucasus, also known as Transcaucasia or the Transcaucasus, is a geographical region on the border of Eastern Europe and West Asia, straddling the southern Caucasus Mountains. The South Caucasus roughly corresponds to modern Armenia, Georgia, and Azerbaijan, which are sometimes collectively known as the Caucasian States. The total area of these countries measures about . The South Caucasus and the North Caucasus together comprise the larger Caucasus geographical region that divides Eurasia. The South Caucasus spans the southern portion of the Caucasus Mountains and their lowlands, straddling the border between the continents of Europe and Asia, and extending southwards from the southern part of the Main Caucasian Range of southwestern Russia to the Turkish and Armenian borders, and from the Black Sea in the west to the Caspian Sea coast of Iran in the east. The area includes the southern part of the Greater Caucasus mountain range, the entire Lesser Caucasus mountain range, the Colchis Lowlands, the Kura-Aras Lowlands, Qaradagh, the Talysh Mountains, the Lankaran Lowland, Javakheti and the eastern portion of the Armenian Highland. All of present-day Armenia is in the South Caucasus; the majority of present-day Georgia and Azerbaijan, including the exclave of Nakhchivan, also fall within the region. Parts of Iran and Turkey are also included within the region of the South Caucasus. Goods produced in the region include oil, manganese ore, tea, citrus fruits, and wine. It remains one of the most politically tense regions in the post-Soviet area, and contains three heavily disputed areas: Abkhazia, Artsakh, and South Ossetia. Between 1878 and 1917, the Russian-controlled province of Kars Oblast was also incorporated into the South Caucasus. Nowadays, the region is referred to as the South Caucasus or Southern Caucasia (Haravayin Kovkas, Cənubi Qafqaz, Ҹәнуби Гафгаз; tr; Yuzhnyy Kavkaz). The former name of the region, Transcaucasia, is a Latin rendering of the Russian-language word Zakavkazye (Закавказье), meaning "[the area] beyond the Caucasus".