which university did he last study in?
University College (now the University of Ibadan)
Chinua Achebe
In 1948, in preparation for independence, Nigeria's first university opened. Known as University College (now the University of Ibadan), it was an associate college of the University of London. Achebe was admitted as a Major Scholar in the university's first intake and given a bursary to study medicine. 
who was chinua achebe? A Nigerian novelist, poet, professor, and critic. where is he from? Igbo town of Ogidi in southeastern Nigeria
wiki:19896978
Chinua Achebe [SEP] University
In 1948, in preparation for independence, Nigeria's first university opened. Known as University College (now the University of Ibadan), it was an associate college of the University of London. Achebe was admitted as a Major Scholar in the university's first intake and given a bursary to study medicine. It was during his studies at Ibadan that Achebe began to become critical of European literature about Africa. After reading Joyce Cary's 1939 work "Mister Johnson" about a cheerful Nigerian man who (among other things) works for an abusive British storeowner, he was so disturbed by the book's portrayal of its Nigerian characters as either savages or buffoons that he decided to become a writer.