sentences:  Sheikh Usman Dan Fodio fled Gobir and from his sanctuary declared Jihad on its king and all Habe dynasty kings for their alleged greed, paganism, injustices against the peasant class, use of heavy taxation and violation of the standards of Sharia law.The Fulani and Hausa cultural similarities as a Sahelian people however allowed for significant integration between the two groups.Since the early 20th century, these peoples are often classified as "Hausa-Fulani" within Nigeria rather than as individuated groups.