[quote=@Ascendant]
I'd probably have to do some research into the size of say, Europe and North Africa and then do some looking into how long campaigns were. I know a lot of ancient wars lasted years simply due to how long it took just to reach the enemy. I assumed time would move faster after the first year or so.
[/quote]

[url=https://ian.macky.net/pat/map/euro/euroblu2.gif]Here's the source I used[/url] and [url=https://i.imgur.com/yIfUil1.png]this is me placing the scale over the image of Europe until it fits[/url]. It is roughly 8 x 500km/300mi = 4.000km/2.400mi from west to east/east to west. Doing the same to the map we have nets us [url=https://i.imgur.com/6YBOlEL.jpg]this[/url] which is;

[b]West:[/b] [i]4x600mi + 360mi = 2760mi[/i]
[b]East:[/b] [i]3x600mi + 360mi and then some = 2160mi[/i]

So for us to travel 'Europe style' from east-to-west would net us 2760+2160mi = 4920mi, which is bigger than Europe by.... a long shot. Converted it is roughly 7917.972km, almost double the size of Europe -- which is 1 continent, and we have two, so for our RP to make more sense, it'd be the equivalent of the French campaign into Russia, travel wise. And that's using this stupid method of trying to figure out how wide/tall Europe is on the map. :l

In short; currently traveling to another tribe for whatever reason you might have on foot is a task that you really can't reasonably accomplish if we don't suspend our disbelief, which makes early primitive trade like it existed irl virtually impossible (I can't trade flint for pelts, or whatever).