The Bengali people are the main ethnic group in the region of Bengal (now divided between Bangladesh and the Union of India) in South Asia. They speak Bengali (বাংলা Bangla), a language of the eastern branch of the Indo-Aryan languages. In their native language, they are referred to as বাঙালী (pronounced Bangali). They are an eastern Indo-Aryan people, who are also descended from Austro-Asiatic and Mongoloid peoples, and closely related to the Assamese, Biharis and other East Indians, as well as to Munda and Tibeto-Burman peoples. As such, Bengalis are a homogeneous but considerably diverse ethnic group with origins of many people stretching as far as Tibet and Iran. They possess a rich culture and a literature written in the Bengali language. Their staple foods are fish and rice.