Which of Hausa-Fulani's languages is the Chadic language with the largest number of speakers, Fulfulde or Hausa?
Hausa–Fulani:  For example, when the Fulani took over the Hausa city-state of Kano during the expansion of the Sokoto Caliphate, the new emirs at first spoke Fulfulde but eventually had shifted to Hausa instead.
i don't know