It has to be a period in which the sort of battles you're fighting at the outset aren't the sort of battles you're fighting at the end. 'It also has to be a time of technological and military change. There had to be a time where there was a competition element between these people.
Basically, you've got to have a competing set of nations, families or clans or, as in Empire's case, established nations that could've come and dominated at that time. 'There have to be a number of factions that could've come to power at any one time. 'When considering a setting for Total War, there are several features present in any area of history that you're thinking of using.
