Definitions of Inner Asia vary greatly. Inner Asia includes those lands that have linked the major agrarian civilisations of Eurasia, from China to India to the Mediterranean and Europe, since the late Neolithic period. In the 19th century, it became customary to refer to the trade routes between these regions as the "Silk Roads". But silk was just one of the goods exchanged through Inner Asia. religions, diseases, coins, cuisines, artistic fashions, political titles, all travelled the Silk Roads, as did Buddhism, Christianity, Manichaeism and Islam. Seen in this way, Inner Asia appears as the central knot in the vast tapestry of Eurasian history. To take Inner Asian history seriously is to see the underlying unity of Eurasian history. S.N.C. Lieu, From Iran to South China: The Eastward Passage of Manichaeism, L. Cansdale, Jews on the Silk Roads, C. Benjamin, An Introduction to Kushan Research, D. Christian, State Formation in the Inner Eurasian Steppes, S. Helms, Ancient Chorasmia: The Northern Edge of Central Asia from the 6th Century B.C. to the mid-4th Century A.D., H. Hendrischke, Chinese Concerns with Central Asia, C. Mackerras, Some observations on Xinjiang in the 1990s, W. Maley, The Dynamics of Regime Transition in Afghanistan, K. Nourzhanov, Traditional Kinship Structures in Contemporary Tajik Poilitics, S. Akbarzadeh, Reformism in the Bukharan Khanate, G. Lafitte, Re-orienting Mongolia, F. Patrikeef, Baron Ungern and the Eurasian Empire, R. Pitty, Russia and Eurasia in International Relations, A. Van Tongerloo, Turkestan: a Treasury of Civilisations, G. Watson, Central Asia as Hunting Ground: Sporting Images of Central Asia, T. Matthew Ciolek, "Digital Caravanserais": Essential Online Resources for Inner Asian Studies.