It was already the twentieth century. East Africa could no longer replicate the large-scale expulsion and slaughter of African natives as it had in the nineteenth century. Never mind international opposition—even East Africa's own people would find it difficult to accept psychologically.
Therefore, the main population of West Africa would inevitably still be black people in the future. West Africa currently had roughly forty to fifty million people, while the Kingdom of Southern Germany had only a little over five million—barely more than one-tenth.
To more effectively isolate West African blacks, the Kingdom of Southern Germany would need to reach a population of twenty to thirty million merely to barely achieve that.
Of course, East Africa was not relying entirely on the Kingdom of Southern Germany alone to become East Africa's population Great Wall. In the future, there would also be mixed-blood German gathering areas like Togoland, arranged in West Africa to serve as spokesmen for East African interests there.
Moreover, one point had to be noted: the Kingdom of Southern Germany might also face declining birth rates in the future. Even now, it was already Africa's second-richest country after East Africa, both in total scale and per capita terms.
If East Africa did not suppress the Kingdom of Southern Germany, then optimistically, within twenty or thirty years, it could become a newly industrialized country in the world, similar to Canada beside the United States today. If Southern Germany itself did not strive hard enough, however, it might end up muddling along into Africa's "Argentina."
Yet even Argentina, after experiencing the Great Depression, was still an "ideal land" envied by those backward or war-ravaged regions of Asia, Africa, and Latin America in this era.
The countries of South America, like their suzerains Spain and Portugal, were lacking when compared upward