Ahzoh wrote:I guess I wouldn't not be able to give Haxyakian family the kind of time depth like that of Afro-Asiatic without developing more language descendants.
The specific migration patterns of the Haxyakians is like this:
The speakers inhabited a northern peninsula on the Southern Continent near the equator of Sedi for a thousand or so years, then they started spreading out into the ocean along the equatorial island chains as well as expanding further inland on the continent. The people exploring and inhabiting the island chains migrate further north reaching the south coast of the western half of the Northern Continent. At this point what was once Haxyakian is now split into Himoshian and Tomosian; Tomosian spoken by those that remained on the Southern Continent and Himoshian spoken by those inhabiting the coast of the Northern Continent. Then the Himoshians expand farther north until they span an area of 13.3 million km2 (which includes a desert along the west coast, a mountain range in the middle, and a rainforest near the southern coast) and that's when Himoshian becomes Old Takshian.
Central Charric is probably the last branch to diverge, since it is in the area where the Himoshian settlers originated.
Oh well that's not too bad to work with
I think the main things to keep in mind are a) how long did each period of expansion take, b) how much area did the expansion cover, and c) how long was long-distance communication maintained in these new areas.
For example, if the expansion was rapid, but with little to no real long-distance communication, then you might expect the spreading language to split off relatively quickly, but possibly following more of a wave-like division. If, however, long-distance communication was maintained for quite some time, you might expect slower branching followed by more rapid division at the end of that communicative period. If the expansion is slow or non existent, then you'd expect slow branching.
So, during the Old Takshian period, which seems to be one of fairly rapid expansion, what is long-distance communication like? Is the expansion something we might see as similar to that of the Roman or Mongolian empires (Rome doubled in size in about 150 years, maintaining that size for almost another three centuries while the Mongolian Empire tripled in size in about two decades, doubling again over the next century before falling apart), or was it something a little bit slower, possibly dotting the landscape with smaller independent territories on the outset?
The dates you come up with will tie in quite heavily with these sorts of factors, how well communication can be maintained across the geographical and political landscape, and, generally speaking, how soon various speech groups become more isolated from each other (IIRC, there was a suggestion that bodies of water, especially seas rather than rivers, and mountains/valleys are more likely to lead to simple splitting of languages, while more easily navigable plains show evidence of wave-like divisions).