The Indo-Iranian languages (also Indo-Iranic languages or Aryan languages) constitute the largest and southeasternmost extant branch of the Indo-European language family (with over 400 languages), predominantly spoken in the geographical subregion of Southern Asia. They have more than 1.5 billion speakers, stretching from Europe (Romani), Mesopotamia (Kurdish languages, Zaza–Gorani and Kurmanji Dialect continuum) and the Caucasus (Ossetian, Tat and Talysh) eastward to Xinjiang (Sarikoli) and Assam (Assamese), and south to Sri Lanka (Sinhala) and the Maldives (Maldivian), with branches stretching as far out as Oceania and the Caribbean for Fiji Hindi and Caribbean Hindustani respectively. Furthermore, there are large diaspora communities of Indo-Iranian speakers in northwestern Europe (the