I played this awhile ago (it came out in europe a LONG, LONG time ago). To tell you the truth, it gets tedious after awhile cause of the whole 'month' thing. The game allows you to do only ONE thing and it has to be an specific thing. One month it will be selling items, so all you can is sell, another is negotation, another is construction, etc, etc. When it comes time to battle is good, but since that happens only once every like 6 or 7 months sometimes it becomes boring.
After you conquere a bit part of the map, the rest is extremely boring since you have so much land/power the negotation, selling and everything becomes useless at this point (which is when you have around 7 to 10 lands). So you'll be waiting for battle to come to actually DO something.