Densely populated compared to the rest of Algeria? Sure. That's why I'm supposing half the population lives in 5% of the land area. Compared to European cities of this time period? Less so.
I think you are underplaying how many Germans moved to Poland. Places like Posen and East Prussia rapidly Germanised.
You mean West Prussia?
In any case, not enough Germans moved to the Prussian provinces to make Posen and West Prussia permanently German. Even though these were territories directly adjoining Germany proper with large German minorities, that just did not happe.
But in this case there are extra push factors of a revolutionless France ITL likely being a more authoritarian, feudal place with fewer opportunities for economic advancement compared to western Germany in our timeline.
Leaving aside that the idea of a revolutionness France was not stipulated at the beginning, does a lack of revolution necessarily mean a lack of reform? Would a revolutionless France be less dynamic than the United Kingdom, even if it does reform successfully? Might it plausibly do
better, given its larger size and a history lacking in decades of civil and international war?
You can argue whatever you want in your particular scenario. That isn't what we were talking about.
I would imagine Algeria here would function more similarly to Portuguese Angola in OTL: much more cosmopolitan and less-class based than the homeland.
It's worth noting that, at its largest, Angola's immigrant population amounted to a
tenth of the total population of Angola.
In addition, German Protestants were much more welcome in Canada and the USA than French Catholics would be.
Why? This is an assumption that you are not backing up.
Also, in the case of Canada: What? A second POD that sees the end of
French Canada is possible, I suppose, but it's hardly required.
It also seems like in our timeline the vast majority of French emigration went to Algeria. In a place with more crowded rural areas, more second sons and less economic opportunity in France itself, I can see emigration being a lot larger proportionally.
An extra 10 million people in France itself by 1870 might mean four or five million more emigrants. If half of these go to Algeria, that gives you the numbers needed.
But why would half of these go to Algeria? This is an assumption that you're just not ba
Do you have any sources for how much Spanish and Italian emigration there was during 1800-1950 and where it went to? That would be helpful to judge.
Emigration to Algeria? Emigration generally?