Complex sentence: There were few high level civil service professions open to indigenes in Northern Nigeria and coupled with the lack of a post-graduate school except the Yaba Higher college; the teaching profession became the dominant career path early graduates of Kaduna college took and Shehu Shagari was no exception.
Split into simpler sentences: There were few high level civil service professions open to indigenes in Northern Nigeria coupled with the lack of a post-graduate school except the Yaba Higher college. The teaching profession was one of the few career paths early graduates of Kaduna college took and Shehu Shagari was no exception.