Conversation so far:
Was there migration in the later vedic period?
form, the Vedic society transitioned from semi-nomadic life to settled agriculture.
what kind of things did they grow?
CANNOTANSWER.
how did the society change?
the old tribes coalesced to form larger political units.

Question: did they form a society?
Self-contained rewrite: Was a society formed in the later vedic period?