"fleeing" and "replaced" are loaded terms, I don't think you can derive that from this data. That said, there's a lot of workers being imported from Asia to the middle-east for their ambitious construction projects, could that explain it?

None of these regions have homogeneous conditions that mean anyone needs to be replacing fleeing locals to explain these stats. Millions of migrant workers are in the Gulf, and many of them come from the Philippines. Millions of people have fled conflicts in other parts of the Middle East.

At least in Argentina that is because it's not the land of opportunities it used to be in the late 19th/early 20th century.

Internal migration has mostly saturated capacity all accross the region in South America

It'll take a while until anyone relaxes

> Meanwhile the middle-east population is fleeing and being replaced with asians?

Persians brought Hinduism to India, so maybe they're returning the favour