When did those Whites arrive there?
From the 17th century onwards, but not that many during the mass European immigration to Americas.
When did those Whites arrive there?
If you go for late (19-20th century) immigration then yes, tropical disease would not be such problem.
Which means, that they have African and Native admixture.Most of them are actually descended from early arrivals
Which means, that they have African and Native admixture.
What kind of labor did they do? It's easier to avoid tropical diseases if you're working as a bureaucrat and not as a farmer.More recently and on smaller numbers, we have the Dutch in Indonesia. They peaked at 300,000, if I'm not mistaken. One can argue than unlikely the Whites on Amazon Basin, they were a transient population, seeing Indonesia as a colony only, not as their home, but it's still a sizeable number,
What kind of labor did they do? It's easier to avoid tropical diseases if you're working as a bureaucrat and not as a farmer.