The document summarizes the rise and fall of the Mali Empire in West Africa between 1240-1500 CE. It describes how the Mali Empire emerged after the fall of the Ghana Empire and was founded by Sundiata who defeated Sumanguru in battle in 1235. Mansa Musa expanded the Mali Empire greatly during his rule from 1307-1332 through expanding trade routes and establishing Timbuktu as a center of learning. However, internal problems like weak rulers after Musa and rebellions, as well as external threats, contributed to the decline of the Mali Empire by 1500.