Hello Elphym!
First, I think the inclusion of a lot of capitals is making it more difficult to parse your posts in general so you might want to avoid that to increase user interaction but that's only my suggestion not a requirement :D
On your question of, "Are there slaves?" No Elyria does not have slavery, the feature is not being implemented mechanically by the developers as it doesn't take away from the overall game experience by lacking said feature and a slavery mechanic can result in large amounts of gameplay loss for those forced into slavery. There are likely other reasons for this decision by the developers that I'm missing but the more important answer is no it won't be implemented mechanically.
For the rest of your post I can see there's a bit of confusion on the historical development of Elyria and its cultural evolution but that is completely understandable as not a lot of lore on the history of Elyria has been released (The woes of being so early in development for us lore lovers haha). Let me go through this by bullet points,
- SO THERE IS NO BEGINNING "REAL" KINGDOMS YET THEY ARE TRIBES ALL AND HIGH KING RULES FIRST CENTURIES ON THERE
No so far as we know the kingdoms of Elyria are indeed established political entities, not just cultural agglomerations. Elyria has gone through three ages prior to the game launch in the 817th year of the 4th age, there has been some time for development and political history in Elyria.
- SO EXPOSITION POINTS AND ALL IS SOMETHING ODD FOR ME ITS LARGER SCALE, SO IF YOU START A GAME YOU ARE JUST 0 AD AND YOU ARE NOT LIKE ROME YOU ARE LIKE 3000 BC TRIBE KINGDOM AND AFTER MANY WARS ABOUT 700 BC GAME STARTS AND ROME WILL BE REBUILD / OR ARE UNFRIENDLY AND FRIENDLY TRIBES TOGETHER
Nope, the "Rome" or period of some high civility and progress for Elyria could be considered something like the First Age (which it has been stated is where a lot of relics come fro) and possibly some Golden Age periods in the Second and Third Age though we unfortunately don't have much information on what happened in them. The main point is Elyria has already gone through a period of progress, then collapse before we get into the game and we're post previous civilization periods,
- ARE UNFRIENDLY AND FRIENDLY TRIBES TOGETHER AND HATES EACH OTHER SO THEY COULD KILL OTHERS ANY GIVEN TIME YOU SEE SOMEBODY (POTENTIAL MURDERER)
It should be noted that while we've been told some tribes are unfriendly with others that does not necessarily mean they are engaging in warfare among cultural lines with one another. You bring up Roman times and that's a good analog for this I think. Throughout Rome's development they bordered the Celts & Gauls of Northern Italy (called Cisapline Gaul in those times). These were two distinct cultural "tribes" and many times these peoples engaged in war and in general had a mistrust of one another but that didn't mean any Roman that walked into a Celtic village was going to be killed on the spot or even have a high chance of being killed for purely cultural reasons.
I think this addresses the main points of confusion / concern in your post. As it is we'll have to see just what tribal relations mean in Elyria but I think your line of thought has gone too far into the realm of assuming very contentious tribal relations.
Cheers!