Why did many West African kings convert to Islam?

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''Following the conquest of North Africa by Muslim Arabs in the 7th century CE, Islam spread throughout West Africa via merchants, traders, scholars, and missionaries, that is largely through peaceful means whereby African rulers either tolerated the religion or converted to it themselves.''

Explanation:

Not to mention Islam's the religion of peace and means submission to the will of God. "Muslims believe that Islam is the complete and universal version of a primordial faith that was revealed many times before through prophets, including Adam, Abraham, Moses, and Jesus. Muslims consider the Quran in Arabic to be the unaltered and the final revelation of God." These are some of the reasons that caused Islam to standout to them, and Islam is the world's largest growing religion as it was also spreading rapidly in Africa at that time too.