NONE of your questions have provable, verifiable, non-JW (i.e., fantasy) answers.
If All people came from Adam and Eve, and there is no such thing as evolution, then where did African ppl come form (or the Chinese or whatever).
There is no good answer. My reasonable scientific guess would be that the genetic markers for all the different types of races were in Adam and Eve in the beginning and came out at different times and places. That is, of couse, if you believe in the fairy tale of Adam and Eve. (I don't). I go with the genetic marker answer. How those markers got there? Who knows?
if no one has met Jehovah, how do we know His name
The short answer is: we don't. The long answer is we do not. The name Jehovah is a made up name in a made up book (Bible). It could just as easily be some name that is completely incomprehensible to humans.
Also God is referred to as He. Isn't that assuming someone male, and human like
Answer....presuming god really exists...we don't know if it is a he. That pronoun was used throughout the Bible (a non-fiction book if I ever read one) by all male writers that lived in a very male dominated society. Of course they attributed the male pronoun (or at least the male domineering attributes) to God. I would presume that if God exists (and I prefer to think that there is a creator, just not one that is so insecure that it wishes to be worshipped by its puny creation), it is of no sex at all, sex being a strictly earthly attribute.
That was fun mental gymnastics. Hope you are not confused.
SnakesInTheTower (of the "no psycho babble" Sheep Class)