In 1959 the author of Hausa Literature and the Hausa Sound System, R.C. Abraham, wrote this:
(the Hausa are what is traditionally called in the West a “tribe;” they live in northern Nigeria and neighboring countries. They number about 73 million people)
“The aim of this book is firstly, to teach vocabulary – always more easily acquired from a context than by learning up lists of words, since words seen in a connected narrative impress themselves on the mind through association of ideas and a student who learns in this way is saved much drudgery.” – from the preface