Uzbekistan , officially the Republic of Uzbekistan (Uzbek: Oʻzbekiston Respublikasi), is a landlocked country in Central Asia. It is surrounded by five countries: Kazakhstan to the north; Kyrgyzstan to the northeast; Tajikistan to the southeast; Afghanistan to the south, Turkmenistan and the autonomous republic of Karakalpakstan to the south-west. Along with Liechtenstein, it is one of two doubly landlocked countries. What is now Uzbekistan was in ancient times part of the Iranian-speaking region of Transoxiana and Turan. The first recorded settlers were Eastern Iranian nomads, known as Scythians, who founded kingdoms in Khwarazm (8th–6th centuries BC), Bactria (8th–6th centuries BC), Sogdia (8th–6th centuries BC), Fergana (3rd century BC – 6th century AD), and Margiana (3rd century BC – 6th century AD). The area was incorporated into the Iranian Achaemenid Empire and, after a period of Macedonian rule, was ruled by the Iranian Parthian Empire and later by the Sasanian Empire, until the Muslim conquest of Persia in the seventh century. The Early Muslim conquests converted most of the people, including the local ruling classes, into adherents of Islam. During this period, cities such as Samarkand, Khiva, and Bukhara began to grow rich from the Silk Road, and witnessed the emergence of leading figures of the Islamic Golden Age, including Muhammad al-Bukhari, Al-Tirmidhi, Ismail Samani, al-Biruni, and Avicenna. The local Khwarazmian dynasty, and Central Asia as a whole were decimated by the Mongol invasion in the 13th century, after which the region became dominated by Turkic peoples. The city of Shahrisabz was the birthplace of the Turco-Mongol conqueror Timur (Tamerlane), who in the 14th century established the Timurid Empire and was proclaimed the Supreme Emir of Turan with his capital in Samarkand, which became a centre of science under the rule of Ulugh Beg, giving birth to the Timurid Renaissance.