Islam is the dominant religion in Uzbekistan. Islamic customs were broadly adopted by the ruling elite, and they began patronage of scholars and conquerors such as Muhammad al-Bukhari, Al-Tirmidhi, Ismail Samani, al-Biruni, Avicenna, Tamerlane, Ulugh Begh, and Babur. Despite its predominance and history, the practice of Islam has been far from monolithic since the establishment of the Uzbek Soviet Socialist Republic. Many versions of the faith have been practiced in today's Republic of Uzbekistan. Most of them stray far from conventional Islamic tradition and law, and practice a far more relaxed approach. Heavily authoritarian interpretations of the Qur’an, including Shariah Law, as seen in parts of the Middle East, are almost unheard of in Uzbekistan. There are also traditions from the Zoroastrian era which are still practiced, before the introduction of Islam to the country. Demographics Almost 90% of the population is Muslim. The CIA Factbook estimates 88%, mostly Sunni. The country is regarded a cultural and religious hub in the Central Asian region. Another estimate states that Muslims constitute 87% of the population while 9% of the population follow Russian Orthodox Christianity, 4% other religious and non-religious. An estimated 93,000 Jews were once present. According to a 2009 Pew Research Center report, Uzbekistan's population is 96.3% Muslim, around 54% identifies as non-denominational Muslim, 18% as Sunni and 1% as Shia. And around 11% say they belong to a Sufi order. History Medieval Islam Islam was brought to ancestors of modern Uzbeks during the 8th century when the Arabs entered Central Asia. Islam initially took hold in the southern portions of Turkestan and thereafter gradually spread northward. Islam also took root due to the zealous missionary work of the Iranian Samanid rulers as a significant number of Turkic peoples accepted Islam. The territory became a world leading center of science, medicine, philosophy and invention, ushering in the period of the Golden Age of Islam. In the 14th-century, Tamerlane constructed many religious structures, including the Bibi-Khanym Mosque. He also constructed one of his finest buildings at the tomb of Ahmed Yesevi, an influential Turkic Sufi saint who spread Sufism among the nomads. Omar Aqta, Timur's court calligrapher, is said to have transcribed the Qur'an using letters so small that the entire text of the book fit on a signet ring. Omar also is said to have created a Qur'an so large that a wheelbarrow was required to transport it. Folios of