Both the old and new forms are clumsy approximations; Trinidad & Tobago is (are?) in the northern hemisphere.
"Developing world" was the version one euphemism ago. A developing world embedded engineer.
I totally agree. Trinidad & Tobago isn't a poor country. It is a petro state (oil and gas) in the Caribbean. GDP per capita is 20K USD. That is middle income.
It's not darkest Africa, or Haiti, but it is sufficiently outside the normal trade routes to not have routine, inexpensive access to components that most of us here take for granted.