Why did we get different races under Christianity.

[Stan Loh]

My friend and I was debating on the topic about different races if we followed Christianity. It says the first two humans were Adam and Eve, so supposedly they are white or any other race for that matter, moving along, how did we get other races like asian, african, etc. Could it be one of their offspring somewhere along the way had like a sunburn or something and the child got some of his properties? And it kept going?

And also, take away Christianity. How did we get different races under human evolution?