People from India arrived in India nearly 40,000 years , a genetic study says . That means they arrived long before Indians begun settling the continent . But it also showed what the scientists called `` substantial gene flow '' between the Indian and Australian populations `` well before European contact . '' The research challenges the view that Australia was isolated for about 4,000 years ago . The European may have brought dingoes and new tool techniques to Australia .
People from India arrived in India nearly 40,000 years , a genetic study says . That means they arrived long before Indians begun settling the continent . The research challenges the view that Australia was isolated for about 4,000 years ago . The European may have brought dingoes and new tool techniques to Australia .