First-and-third-world?

Exhibitions like MoMA’s “Small Scale, Big Change” and the Cooper-Hewitt’s “Design with the Other 90%” are often evaluated purely on the “goodness” of their ?content and the publicity they can bring to issues, with few critics questioning their criteria for inclusion or evaluation, or even the effectiveness of their presentation. There was a good back-and-forth around Bruce Nussbaum’s Fast Company essay “Is Humanitarian Design the New Imperialism?” although his use of the word “imperialism” jumped the discussion past such reasonable first-and-third-world questions as: Does it work? How well?

You can see the full context at http://www.printmag.com/article/an-anatomy-of-uncriticism/.

I wonder what "first-and-third-world question' here means.
I think it has some implication but don't know exactly what it is.