Why do Oranj and Transvaal exist?

[SgtPepper1]

From every source I've read, these states didn't exist in 1836 at all, much less January 1836. Wikipedia says that realistically, it would've been just expedition parties scouting the area.

Looking at the Victoria 2 map, is this just a holdover from 2010?

 

[Ilya Belkin]

I guess ideally it should be modeled as a growing independent colony primarily draining Dutch pops from the Cape Colony. Currently there is no mechanical foundation to implement something like this in the game.

 

[DawramBashere]

I think the rule of cool does apply here. Is it historical? No. Are there people who would love to play them? Yes. With the current game system limitations I do believe that it's better to have them as countries and let player play them rather than spawining them by event later (the only realistic way to picture it in game I believe)