Briefly describe the role of the kingdom of mali in global trade. what was the key to its great wealth?

The correct answer should be Salt. They had a lot of salt and salt was accepted even as currency because it was rare and often it was worth more than even gold. It was accepted everywhere unlike gold that was mostly useless other than for things like jewellery. Salt was needed everywhere and Mali had a lot of it.

Sir thomas more, venerated in the catholic church as saint thomas more, was an english lawyer, social philosopher, author, statesman, and noted renaissance humanist. he was also a councillor to henry viii, and lord high chancellor of england from october 1529 to 16 may 1532. i found this information on wikipedia