Islam in Zanzibar to fight for the secession of Zanzibar from the Union of the United Republic of Tanzania. Islam in Zanzibar Islam is the most prominent religion on the island of Zanzibar. According to the CIA Factbook, more than 99% in the island are Muslim. The vast majority of Muslims in Zanzibar are Sunni of Shafi'i school of jurisprudence with minority Ibadi, Ismaili and Twelver Shia. Islam came to Zanzibar in the 8th century. There is also a presence of Ahmadi Muslims in Zanzibar. According to one source, "Islam in Zanzibar inspired anti-colonialism, political movements and nationalistic struggle for independence." Other Muslim
Sultanate of Zanzibar island. After his death in 1856, two of his sons, Majid bin Said and Thuwaini bin Said, struggled over the succession, so Zanzibar and Oman were divided into two separate realms. Thuwaini became the Sultan of Muscat and Oman while Majid became the first Sultan of Zanzibar, but obliged to pay an annual tribute to the Omani court in Muscat. During his 14-year reign as Sultan, Majid consolidated his power around the local slave trade. His successor, Barghash bin Said, helped abolish the slave trade in Zanzibar and largely developed the country's infrastructure. The third Sultan, Khalifa bin Said, also