Thanks for telling me about Sogdiana and Bactria now. That is so interesting to me that the marriage to Roxanne had such an important effect also. I am always wondering about the inhabitants of these regions, where they all came from as well, and there are some few books that do go into great details describing the long histories as I recall now. I tend to forget many of them soon after I read them. I recall a professor from Washington State who also wrote a book that included the history of the population in not only Macedonia but other regions nearby influenced by Alexander also...I think Marcus once mentioned that book in a post.
I am curious as to whether Asians traveled into those regions much in those times. I also wonder how it is that we know so much about them, what kind of records and physical data that each tribe or village left for later generations to know.
I think I will check out Wikipedia now to see what it has to say about this. Thanks again.