Make South America More Populous

As most of you know by international standard South america, and specially the Southern Cone, is basically Depopulated
Here some population Density maps that explain my point


Population_density_countries_2017_world_map%2C_people_per_sq_km.svg


World_population_density_1994_-_with_equator.png


The estrange thing is that most of the places that are really low inhabited are the ones that area really good to the Human life, The Argentinean Pampas, Uruguay, the Santa Cruz District of Bolivia, The Chilean South. The Chaco Biome between Bolivia, Paraguay, Argentina and Brazil

Your Challenge, if you accept, is to make South America more populous with Any POD after January 1 1900.
This is because Before 1900 one of the principal difficulties is to reach the region, this was more or lees alleviated with the new transport methods of the XX century (fastest ship, airplane, all terrain car an trolley, etc)

The Immigrant could come from every part of the globe if you could justify why.

Ej: Chile, in OTL, have a really big Palestinian Colony that arrived from the Ottoman Empire, fleeing the obligatory military services of the Christian communities in the Region.
 
That's the whole Western Hemisphere, which until a decade ago had less than a billion people. The best PODs for more population are no later than the 1700s.

During the Cold War there was a lot of support for birth control and even enforced sterilisation to prevent a "population bomb", which was justified also by helping promote economic development. A lot of this was pushed by certain groups dominated by Americans. If you want more people, then don't have support for these groups.

Also, if the US enforces its post-WWII restrictive immigration laws earlier than OTL, then many immigrants like Italians, Lebanese, and Greeks will go to Latin America. Including the Japanese on the list would also help make the Japanese (and even Korean) communities in Brazil and Peru and elsewhere larger.

Finally, economic development would definitely help. Argentina, Chile, and Uruguay could easily have been on par with parts of Europe with a POD of 1900, and other parts of South America could definitely be better as well. This would mean a continuing amount of immigration there and thus more people.
 
All ways you could think will help to have a more populous south America are welcomed, Something in the lines of the European Population Growth of the XVIII and XIX centuries. but in South america in the XX.

I suppose that a POD in the 1700 could work, but then s you say, Most of the Western hemisphere was really depopulated in this period, and the Americas even more
 
All ways you could think will help to have a more populous south America are welcomed, Something in the lines of the European Population Growth of the XVIII and XIX centuries. but in South america in the XX.

I suppose that a POD in the 1700 could work, but then s you say, Most of the Western hemisphere was really depopulated in this period, and the Americas even more

A lot of the population growth of Latin America in the 20th century was for the same reason as what's driving Africa's population growth now. Modern medicine and vaccines were proliferated throughout the region, and food imports helped prevent/reduce the impact of famine. This means reduced infant mortality and less death from disease as well as people living longer, meaning population growth.
 
During the Cold War there was a lot of support for birth control and even enforced sterilisation
Yeah the later was a crime in several south americans country and should not have happened but i disagree with OP idea, we're a country pretty full and full of poverty and misery, better keep our current population that more misery.
 
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