In the Vic III maps, what is in square are the borders from Berlin Conf. and in a circle countries that were already colonized at the time (officially). Might have missed a lot.
Yes, but as I wrote, although those areas are ugly and could/should be reworked, there weren't any actual borders in those areas historically, and since the game assumes the existance of borders, some sort of semi-arbitrary borders are going to end up included. Deciding to use the colonial borders (most of these borders weren't actually drawn during the actual conference, but I get your point) is honestly not that bad of a choice imo when the alternative is just other semi-arbitrary borders made up by the developers instead.
I am attaching also two maps taken from the French Archives :
Note, old maps aren't a great resource to determine actual territorial control *at all*. They can sometimes show some decent-ish indications of things, but they usually don't really display the same thing that the game is meant to represent. Algeria for example, wasn't unified at the time, rather it was controlled mainly by the Emirate of Mascara and the Beylik of Constantine, as well as a number of smaller kingdoms and tribes. Maps from the time in particular aren't going to show
de facto control, but rather
de jure, and often not even that but just general regions (plenty of old maps show all of Germany unified for example, long before the country of "Germany" existed. That doesn't mean that the game is wrong in showing Germany as divided by a bunch of kingdoms/principalities). And even more than that, European cartographers often had
very inaccurate understandings of Africa outside of the coastal regions up until the late 1800's
By the way, Algier (Algeria) was already colonized by France since 1930.
It was claimed by France, but France only actually controlled a few coastal cities and neighboring territories in reality. The new 1.3 update later this month is pretty accurate in terms of showing that.
Here's a decent map on Wikipedia showing the de-facto expansion of French territories in Algeria
Tunisia is also already correctly named Tunis in the game.
Also, you keep writing 1930/1931/1935 - that was very confusing to me for a moment, had to go check the dates of all the maps, because it's the wrong century (the maps are from the right century though).