This is the 6738th most frequent German word.
europäern
"Europäern" is the dative plural form of "Europäer," meaning "Europeans."
Here, 'Europäern' is used in dative plural form to refer to 'Europeans' as the indirect object benefiting from the diversity of cultures.
Europäern gefällt oft die Vielfalt der Kulturen in ihrer Region.
Europeans often appreciate the diversity of cultures in their region.
In this sentence, 'Europäern' is also in dative plural form, indicating the recipients of the action ('help').
Wir sollten Europäern helfen, ihre Traditionen zu bewahren.
We should help Europeans preserve their traditions.
Here, 'Europäern' is in dative plural form, used as a part of the prepositional phrase 'unter Europäern' (among Europeans).