What are the factors are responsible for intellectual migration?

the factors like

1. limited opportunity particulars compared with the US.

2. Relative poverty ,again,as compared with the US .

3, Better quality life (better housing, better cultural facilities, less political strife or oppression a narrower gap between rich and poor etc)

answer; through play and social interaction;

communication.

explanation:

don't be afraid to ask. if you really want to know why they suddenly don't talk to you, ask. but be polite while asking. tell them how you feel. if you feel upset about them ghosting you, say so. people cannot read your mind, so you need to let them know if this bothers you. if they say it's personal family matters, don't get offended. they need space if it's personal.