North Sentinel Island is one of the world's few "unspoiled" areas.
The Indian government has forbidden anybody from approaching North Sentinel Island, the Sentinelese people's home, within three miles. The anthropologist Madhumala Chattophadhyay had numerous calm meetings with the Sentinelese in 1991, but the inhabitants made it obvious (sometimes forcefully) that they did not want to be disturbed in later years. It is today regarded as one of the remaining areas on the planet that has remained undisturbed by the outside world.
One interesting fact about India is that it was the first country to develop sugar extraction and purification processes.