Conversation so far:
What did Chinua Achebe do in his fellowship travels?
Chinua Achebe left Nigeria as part of a Fellowship for Creative Artists awarded by UNESCO. He travelled to the United States and Brazil.
Where did Chinua Achebe travel during his fellowship?
Chinua Achebe met with writers from the US, including novelists Ralph Ellison and Arthur Miller. In Brazil, he met with authors to discuss the complications of writing in Portuguese.

Question: How long did he travel
Self-contained rewrite: How long did Chinua Achebe travel during his fellowship