The Old Wise Man has visited to give us a lecture. In a short while, he will visit again to lecture us on the misinterpretations of his first lecture.

More to the point...

What Zen said is what I was thinking above, obviously in his wisdom he has worded it much more clearer than I. Japan rarely went outside their borders.

However, in terms of "What if" the game might be good. There are plenty of "what if's" around Eastern Asia at that time, and games are all about "what if's".

Total War hasn't taken history too serious up to now, so it wouldn't be too hard to do morally.