Conversation so far:
What encouraged the Huastec people to split from Maya?
What year did the Huastec people leave Maya?
2000 BCE is a reasonable date for the Huastec/Maya split.
Was there a war when the Huastec people tried to leave Maya?
Were there many casualties when the Huastec people seperated from Maya?

Question: where did they go after the war?
Self-contained rewrite: Where did the Huastec people go after the war?