Simplify the following text for a Grade 1 native English-speaking person.
Original: Kano has long been the economic center of northern Nigeria , and a center for the production and export of groundnuts . Kano houses the Bayero University and a railway station with trains to Lagos routed through Kaduna , while Mallam Aminu Kano International Airport lies nearby .
Simplified: It is the center of the Kano State .