[14] The major ethnic groups in pre-colonial Kano City were the Hausa, Fulani, Barebari (Kanuri), Tuareg, Arab, Nupe and some tribes from the southern Nigeria.[15] Since independence, Kano State has developed a diverse economy, establishing itself as a center for industry,[16] agriculture,[17] and Islamic banking.[20][21] Challenges faced by Kano State in the 21st century include attacks by the Islamist terrorist group Boko Haram,[22][23][24] inter-religious violence,[25][26] and extreme poverty.[28] An important early center of commerce in the region was Kurmi Market, founded by the Hausa people under Emir of Kano Muhammadu Rumfa in 1463 CE.[31] The Jihad leaders of the Caliphate encouraged the Kola nut trade, and Kano was the greatest beneficiary with an annual turnover of about $30 million.According to the Kano State Emergency Management Agency (SEMA), 25 local government districts experienced flooding as a result of the extreme rain's aftermath.Some of the food crops cultivated are millet, cowpeas, sorghum, maize and rice for local consumption while groundnuts and cotton are produced for export and industrial purposes.Kano State is a major producer of hides and skins, sesame, soybean, cotton, garlic, gum arabic and chili pepper.[16] Others include agricultural implements, soft drinks, food and beverages, dairy products, vegetable oil, animal feeds etc.