sentences:  One of the most significant Sultans was Siddiq Abubakar III, who held the position for 50 years from 1938–1988.He was known as a stabilising force in Nigerian politics, particularly in 1966 after the assassination of Ahmadu Bello, the Premier of Northern Nigeria.Following the construction of the Nigerian railway system, which extended from Lagos in 1896 to Ibadan in 1900 and Kano in 1911, the Hausa of northern Nigeria became major producers of groundnuts.