Olusanya attended
Methodist Boys' High School, Lagos and studied history at the
University College, Ibadan (now
University of Ibadan). He furthered his studies at the
University of British Columbia and later earned a doctorate degree from
University of Toronto. After completing his studies, he took up a teaching appointment in the
Northern Nigerian region at
Ahmadu Bello University, where his former history teacher, Abdullahi Smith was developing
ABU's history department. However, political and ethnic conflict preceding the
Nigerian civil war precipitated his movement to
University of Lagos in 1966. In 1984, he was appointed director-general of Nigeria's foremost foreign relations think tank, the
Nigerian Institute of International Affairs. == Selected works ==