There are other “uncontacted” tribes, although they are perhaps more contacted than the sentinelese depending on how you look at it.

https://survivalinternational.org/tribes/amazonuncontactedfrontier

This is actually one of Trump’s stated goals, to weaken the U.S. dollar. He believes that it will make American industry more competitive.

It is at odds with his goal of maintaining the U.S. dollar as the international reserve currency…

https://www.marketwatch.com/story/trump-and-vance-want-a-weaker-u-s-dollar-be-careful-what-you-wish-for-5227209d

This is an oversimplification. It is true that organic farmers are permitted to use certain chemicals on their crops, but the allowed substances are very different in terms of ecological impact compared to conventional chemical treatments (conventional chemicals and their breakdown products generally persist in the environment much longer).

Organic farmers are also required to try to manage pests without chemicals first, steering the organic industry towards “integrated pest management” where very small amounts of pesticides are used in a highly targeted manner.

https://www.usda.gov/about-usda/news/blog/organic-101-allowed-and-prohibited-substances https://www.pubs.ext.vt.edu/ENTO/ENTO-384/ENTO-384.html