Why/how was Mansa Musa a great leader for Mali and its people?

He brought the cities of Timbuktu, Gao, and Djenné into the kingdom, making ancient Mali one of the largest empires in the world.

the award is named for an american naval historian and theorist, rear admiral alfred thayer mahan, united states navy who, through his writing, provided stimulus and guidance to those who share in the defense of the nation.

a system of cooperative federalism emerged, as the powers of the federal government expanded.