Algeria was a different sort of colony in the fact that it had a sizable settler population rather than just being under European administration. Similar to South Africa I suppose. That makes it easier for the Fourth Republic, but I never said it would be easy. My guess is that they elect some sort of fascist type government quite earlySince the colonies had no industry worth the name - no colony of any nation had at this time - they're going to be hard pressed to produce much of anything. External suppliers are not likely to line up and make offers, too busy with things closer to home.