Answer: BELONGINGNESS NEED.
Explanation: Belongingness can be defined simply as the quality or state of belonging.
It is the human emotional requirements to be a recognised or received member of a group. It could be work colleagues, family, religion, ethnicity etc.
Belongingness has to do with an individual choice and or the choice of the group.
The feeling of Belongingness is unavoidable in the human emotions as it is a feeling of Belongingness that enables an individual identify with a group thereby interacting and communicating efficiently with the group.
As can be seen in the question, when refugees have a lot of their fellow countrymen due to chain migration, their stress is reduced due to Belongingness.