I can’t even imagine having to leave behind children due to economic necessity. My mom does a lot of research in this area, as she is very passionate about it. Her and my father immigrated to the states from Greece in their mid 20s, before moving to Canada (where my brother and I were born). Here is her Wikipedia page if you’re interested. She has quite a few books too.

https://en.m.wikipedia.org/wiki/Evangelia_Tastsoglou