There is a wide variety of languages spoken throughout Asia, comprising a number of families and some unrelated isolates. Asian languages usually have a long tradition of writing, but not always.
The major families in terms of numbers are Indo-European in South Asia and Sino-Tibetan in East Asia. Several other families are regionally dominant.
Sino-Tibetan includes Chinese, Tibetan, Burmese, and numerous languages of the Tibetan Plateau, southern China, Burma, and North east India.
The Indo-European family is represented by the Indic branch, which includes Sindhi, Hindi, Urdu, Punjabi and many other languages of India (Assamese, Bengali etc.), Pakistan, Bangladesh, Nepal, Sri Lanka and the Maldives; the Iranian branch, which includes Persian, Pashto, and other languages of Iran, Afghanistan, Pakistan and Central Asia; the Slavic branch, which includes Russian in Siberia; Greek around the Black Sea; and Armenian; as well as extinct languages such as Hittite of Anatolia and Tocharian of (Chinese) Turkestan.