University graduates who have not obtained a teacher qualification certificate cannot be employed as teachers by schools in a certain area. All students in the history department of the normal university in that area must obtain a teacher qualification certificate before graduation. Therefore, any graduate of the history department of the university can be hired as a teacher in the area.
The statement 'Obtaining a teacher qualification certificate is the only condition for college graduates to be hired as teachers in the area' can make the above argument stand.