It's the so-called "mobility". It means that in order to prevent academic endogamy, students are encouraged to move and are given points for it in the application for some scholarships and for jobs, later. There are even some scholarships tham require it as a condition sine qua non.
I think so. And what really matters is the place you get your PhD from, not the licence. There you'll establish closest contacts and useful networks. So it's better to save the best for that time.
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