AHC: French population of one hundred million

Just what it says. Can France reasonably reach a population of a hundred million by modern times? PoD should be after 1500.
 
Can 'France' include OTL Algeria?
Colonies that have been fully legally integrated are acceptable, but not preferred. Of course, I think that combining modern France and Algeria already does that, or at least comes very close, so that might be taking the easy way out;).
 
Avoid the mysterious decline in French birthrate in the nineteenth century and have the napoleonic wars be shorter and have less death in other.

If you are willing to expand France a bit adding Belgium would help and it would give the French Antwerp as a major Atlantic port.
 
I had a recent thread agreeing that equaling German density is easy enough for Metro France. That's 120 million.

I think avoid the demographic slow down of the 1800s could work, just get proper legal reform in.
 
At the time of the Revolution, France already had a population of 27 million. One hundred years later, its population had only increased to 38 million. Fix that, and 100 million is easy. For comparison, "Germany" around 1800 only had a population of 16 million, and unlike France, many millions of Germans emigrated to the New World in the 19th century. By the time of WWI, the German Empire had 66 mil. inhabitants, of which 57-59 million lived west of the Oder-Neisse line. At the eve of the Great War, France's population stood at 42 million.
 
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