OK, to avoid confusion, when I used the word "pepper" above, I meant "long pepper" or "black pepper", which are native to the subcontinent. "Chili peppers" (capsicums) are native to South America, though there are many cultivars/hybrids that originate outside South America - nagas being an example. So nagas aren't really from South America, but they aren't really "native" to India either. If that makes sense.
d.