<prompt> Translate the following text to SwahiliFor the organizations that strictly controlled their membership or the number of members, developing and maintaining their membership base was a formidable challenge.  <response>: Kwa mashirika ambayo kudhibitiwa madhubuti wanachama wao au idadi ya wanachama, kuendeleza na kudumisha msingi wao wa wanachama ilikuwa changamoto kubwa. 