Gladly the EU, which to be fair represents quite a large number of developed nations from Europe and beyond, have quite stringent labelling legislation for food stuffs. We have clear labelling for GM's in most things though not on milk and dairy where the animals may (were probably) fed GM corn.

I'm not sure about the story behind mega food manufacturers, Nestle is the only one that springs to mind and we know they are evil because - like so many of these multi-nationals - they cynically move in on nations already in terrible poverty, in order to queeze them of what little they do have and make them even more poor. In the case of Nestle, they are possibly most famous for encouraging new mothers to use formula milk instead of breast milk to feed their babies, thus causing the mother to then *have* to use formula, because her own milk would quickly dry up as a consequence.

The US in particular has been in the grip of king corn and GM Corn now in particular. Because the UFDA decided to subsidise farmers to overproduce some years ago, thereby promoting industrial scale farming and pushing out the small farms.

Food independence is a huge deal. These big organisations promote dependence on their product wherever they land.