Question: Which of Hausa-Fulani's languages is the Chadic language with the largest number of speakers, Fulfulde or Hausa?
Related documents: [0]  [DOC] Hausa ( ) ("Yaren Hausa" or "Harshen Hausa") is the Chadic language (a branch of the Afroasiatic language family) with the largest number of speakers, spoken as a first language by more than 70 million people, and as a second language by another 40 to 50 million or more. Originally the language of the Hausa people stretching across southern Niger and northern Nigeria, it has developed into a lingua franca across much of western Africa for purposes of trade. In the 20th and 21st centuries, it has become more commonly published in print and online. [END] 
[1]  [DOC] Hausa–Fulani are collectively the Hausa and Fulani people of Africa. The two are grouped together because since the Fulani War their histories have been largely intertwined within Nigeria. 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. [END] 
Answer: 
Hausa
Hausa