Analysis of information sources in references of the Wikipedia article "Xã hội nguyên thủy" in Vietnamese language version.
The 72-square-kilometre-area North Sentinel Island is home to the fiercely independent Sentinelese tribe, known to reject any contact with outsiders. The Indian government carried out its 2001 census of the Island from a distance, counting a total population of 21 males and 18 females, although other estimates range higher, to a maximum of 500.
