to the  Chagga  and  Maasai  tribes. The city comprises two major roads, based around the central reference point of clock tower, the north-south road to  Tanga  and Dar es Salaam and an east-west road to Arusha.  The Chagga Tribe The  Chaga  (also called  Wachaga ,  Chagga ,  Jagga ,  Dschagga ,