Sentinelese Heritage

In OTL, the Sentinelese people were the most isolated tribes and the most dangerious tribes in the world, Sentinelese people were protected by the Government of India and the government prevented outsiders from entering the North Sentinel Island unless the outsiders have a permit to go on the island. Expeditions to the North Sentinel Island had some successes in the 20th century, but in the 21th century, no successful contacts were made between outsiders and the Sentinelese tribe.

In this ATL, what if that changed, what if the Sentinelese spread its genetic heritage throughout the Andaman and Nicobar Islands (including marriages from outsiders) and created a big population to create a chiefdom while no longer being isolation from the rest of the world and settling outside of the North Sentinel Island.

Timeline

 * 58000 BC: Sentinelese people settled the North and South Sentinel Island.
 * 35000 BC: Sentinelese people toke over all of the Andaman and Nicobar Islands.
 * 30000 BC: Sentinelese Chiefdom established.
 * 22500 BC: Sentinelese people settled in the southern part of the Indian subcontinent.
 * 10000 BC: Some of the Andaman and Nicobar Islands sank during the late Ice Age.
 * 8000 BC: Most of the Andaman and Nicobar Islands sank at the end of the Ice Age.
 * 7500 BC: Sentinelese Chiefdom's population reaches 580,000 (95% Sentinelese, 3% Mainland Indians, 2% Other Andamanese and Nicobarese tribes).
 * 5000 BC: Sentinelese Confederacy established.
 * 4800 BC: Sentinelese people settled further north of the Indian subcontinent and settled canoe ports and trade ports in Myanmar, Thailand, Malay Peninsula and the Island of Borneo.