According to a 2009 study published by Reich "et al"., the modern Indian population is composed of two genetically divergent and heterogeneous populations which mixed in ancient times (about 1,200–3,500 BP), known as Ancestral North Indians (ANI) and Ancestral South Indians (ASI). ASI corresponds to the Dravidian-speaking population of southern India, whereas ANI corresponds to the Indo-Aryan-speaking population of northern India. 700,000 people from the United States of any race live in India. Between 300,000 and 1 million Anglo-Indians live in India.