What is it called when you want to work in poor countries for a living?

What is it called when you want to work in poor countries for a living?
What is the job called when you want to go to poor countries, live with poor people and help them. Also, to write reports or books on their way of living. I know this is related to Geography and some economics, but I want to know what that job is called. I’m not volunteering, I want to get actual pay for working there because I want to do it for a living.

Answer by Marc
There aren’t many organizations that pay you well to play “white man’s burden” in Africa. Consider some more stable, backup careers.

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What is the best country to live and work as an Expat?

What is the best country to live and work as an Expat?
My girlfriend is Ukrainian and we are searching for a (decent) country where she can work and live. She is a young teacher of English and so far this search has been nothing short of frustrating. I would appreciate some hints/connections. Thank you.
UK not an option, please. Getting a Work Permit is as hard as booking a place in Heaven.

Answer by Cold Hard Fact
I suggest Andorra.
Low Population, high standard of living, no income tax, no corporate tax, member EU, and beautiful country.
http://en.wikipedia.org/wiki/Andorra

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