Culture of Somalia Islamic jurisprudence, although some are also adherents of the Shia Muslim denomination. Sufism, the mystical dimension of Islam, is also well-established, with many local "jama'a" ("zawiya") or congregations of the various "tariiqa" or Sufi orders. The constitution of Somalia likewise defines Islam as the religion of the Somali Republic, and Islamic Sharia as the basic source for national legislation. Islam entered the region very early on, as a group of persecuted Muslims had, at Prophet Muhummad's urging, sought refuge across the Red Sea in the Horn of Africa. Islam may thus have been introduced into Somalia well before the faith
Geography of Somalia the northeast, "Boswellia" and "Commiphora" trees are sources, respectively, of the frankincense and myrrh for which Somalia has been known since ancient times. A broad plateau encompassing the northern city of Hargeysa, which receives comparatively heavy rainfall, is covered naturally by woodland (much of which has been degraded by overgrazing) and in places by extensive grasslands. Parts of this area have been under cultivation since the 1930s, producing sorghum and maize; in the 1990s it constituted the only significant region of sedentary cultivation outside southwestern Somalia. The Haud south of Hargeysa is covered mostly by a semiarid woodland of scattered