Boko Haram insurgency insurgency spread to neighboring Cameroon, Chad, and Niger thus becoming a major regional conflict. In 2015, a coalition offensive forced Boko Haram to retreat into the Sambisa Forest. The insurgency took place within the context of long-standing issues of religious violence between Nigeria's Muslim and Christian communities. Boko Haram has been called the world's deadliest terrorist group, in terms of the number of people it has killed. Nigeria was amalgamated both the Northern and Southern protectorate in 1914, only about a decade after the defeat of the Sokoto Caliphate and other Islamic states by the British which were to constitute
Haram to form a wide range of other terms that have legal implications, such as "hariim" (a harem) and "ihraam" (a state of purity). In addition, the same word "(haram)" is used in the Quran to denote the sacred nature of the Ka'ba and the areas of Mecca, Medina, and Jerusalem. This category of sacred, holy, and inviolable also includes spouses and university campuses. As such, the legal use of the root ح-ر-م is based on an idea of boundaries between the profane and the sacred, as opposed to prohibitions, as is normally assumed. Colloquially, the word "haram" takes on different