This question is from subjective origins but is (supposed to be) objective.

The context of this question arises from people in third world countries going abroad to work. Often they are seen as money-hungry people who don't 'love' their country (unless they are, say, physicists who do research abroad due to poor facilities or engineers or financiers simply looking for higher salary or something like that).

I was thinking that **those people help their country through foreign remittances**. I later additionally thought another help done is that whatever job they would have done in the country is likely ('likely' is probably the key word here) **going to be replaced by someone else who would otherwise have been unemployed or underemployed** would have that job which in turn likely (hooray key words) means that someone else who would otherwise have been unemployed or underemployed would have that job, etc.

* If the answer is no (working abroad necessarily causes less unemployment), under what kinds of situations might this be the case?
* If the answer is no (again, working abroad necessarily causes less unemployment) due to geographical variations, you may consider third world countries.

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Edited to add: Also my concern is understanding whether or not like: are the ones going abroad necessarily like money-hungry people who do not 'love' their country or something? If you choose to work in your country, then do you necessarily 'love' your country more or 'serve' your countrypeople more than if you didn't work in your country? Of course 'love' and 'serve' are subjective, but it's like **I wanna understand if somehow working abroad is like more beneficial to the individual but harmful to the country or something.** To me, it seems like going abroad benefits everyone at least from 3rd to 1st world.