Its founder, El Hadj Umar Tall an Islamic reformer originating from the Fuuta Tooro on the banks of the Senegal River, died fighting against rebels shortly after his forces defeated the Maasina Emirate. After El Hadj Umar's death, the emirate was divided into three states, each ruled by one of his sons. These three states had their capitals respectively in the towns of Nioro, Segou and Bandiagara. A most important distinction was between noblemen (free people) and the non-free (Rimmaibe or Maccube).