Sentence:  ⁽¹⁾ For the mid 1980s I estimate that at least one million adults belong to the <WSD>ecumenopolitan</WSD> stratum; several times as many are in the educational stream with ambitions to join them. / ⁽²⁾ Iranians were graduated from North American universities with motivations that are virtually indistinguishable from their classmates, but their command of Asian languages and their entrepreneurship generates a backflow of <WSD>ecumenopolitan</WSD> commitments to Asia. 
Meaning of the word marked with <WSD> tags:  Of or conducive to the development, befitting the scale, or characteristic of an ecumenopolis or ecumenopoleis.