I am no expert but I find the topics of Lost Enlightenment Central Asia's Golden Age from the Arab Conquest to Tamerlane very convincing. https://press.princet

I am no expert but I find the topics of Lost Enlightenment Central Asia's Golden Age from the Arab Conquest to Tamerlane very convincing. https://press.princeton.edu/titles/10064.html https://press.princeton.edu/titles/10064.html "Because nearly all of these figures wrote in Arabic, they were long assumed to have been Arabs. In fact, they were from Central Asia--drawn from the Persianate and Turkic peoples of a region that today extends from Kazakhstan southward through Afghanistan, and from the easternmost province of Iran through Xinjiang, China."