a huge stone slab with hieroglyphics on it
is in ainchiant writing system
it was a kingdom on the Nile river and par-chilly controlled trade sense they were on the river.
The Empire grew rich from the trans-Saharan trade in gold and salt. This trade produced an increasing surplus, allowing for larger urban centers. It also encouraged territorial expansion to gain control over the lucrative trade routes.
The Mali Empire flourished because of trade above all else. It contained three immense gold mines within its borders unlike the Ghana Empire, which was only a transit point for gold. The empire taxed every ounce of gold or salt that entered its borders. By the beginning of the 14th century, Mali was the source of almost half the Old World’s gold exported from mines in Bambuk, Boure and Galam.
The Songhai state has existed in one form or another for over a thousand years if one traces its rulers from the first settlement in Gao to its semi-vassal status under the Mali Empire through its continuation in Niger as the Dendi Kingdom.