"comfortable conditions are result from progressivism"
Where - a modern country or an ancient country - would you choose to be born
if you cannot control which individual you will be born as? Because if you choose to be born in a modern country, the probability is >99.9999999999% that you would be born as one of the victims here:
https://trueleft.createaforum.com/true-left-vs-right/western-civilization-sustainable-evil/https://trueleft.createaforum.com/true-left-vs-right/western-civilization-is-a-health-hazard/and <0.00000000001% that you would be born as someone living comfortably. This is the full picture of what results from progress.
As Zea_mays expressed eloquently:
https://trueleft.createaforum.com/true-left-vs-right/if-western-civilization-does-not-die-soon/msg6698/#msg6698More humans are enslaved today than at any point in history, and more animals are enslaved today than at any point in history.
"And many of them will leave the nation and seek refuge to the West."
That is what we want to happen.
"Or, try to make a coup to forcibly change it's leader."
This is what we are trying to prevent, in order to maintain the emigration incentive.
"the undeveloped nations will make their people's starving because their backwardness."
Starvation is much less likely when all food is grown locally, which is how it was done for most of history. Relying on imports is what leads to starvation when deliveries stop. This is almost entirely a modern phenomenon, set up by Western civilization during the colonial era.
"What is the another good answer for that problem?"
You should collect movies and TV shows set in pre-modern times and which portray pre-modern life in a positive light, and then encourage people to watch these.