This is a Vanilla Mod

[Skull]

But could somebody please explain me what means terra incognita as I didn't heared this before ?

Ummm...

It coud be a provinical camping...

Edit:
http://en.wikipedia.org/wiki/Terra_incognita

[Xpartacus]

Terra Incognita is a latin word (i hope i'm not wrong about this) wich means "unknown land". In antiquity maps it used to be all lands beyond the previous knowledge of cartographers (likke when Europeans realized that the Americas weren't India the "default" name for most of the continent was "terra incognita").

In RTW mods that name is usually applied to lands where historically the "developed" nations (or the ones present in a mod) never went (the Sahara desert, as an example in MM map), thus, using that "region" for lands either unknown or historically not important you can save region slots and prevent the AI and the player from expanding all over the map (it has no actual consequences, but to me it looks really bad). Also, some mods use that land (it has to be unconquerable) to "place" scripts and stuff like that.

[Asgaroth]

Now I get it...Thank you guys.

[hameleona]

Am, ahowl, you know, that you can not have loyalty, right?
You need a faction for every rebel faction, that you want to have. And you have maxed out the faction limit.
And one faction can not be the rebel faction for more than three others. As far as i know, atleast.