He established a responsible government. He got rid of corrupt and no good administrators. He also changed the system of provincial administration so that all provincial governors were answerable to him!
I hope this helps !
He drew a famous cartoon of a donkey wearing a lions skin scaring other animals
He believed that the Arabic Numeral System was more efficient than the Roman Numeral System.
He also believed that his system, named the Fibonacci Sequence, occurred throughout nature in processes like evolution and even the distances of the planets from the sun (which is crazy). There's still debate on whether it really applies or not, but the number of things things people have found that do work is immense.
