In what ways did the Muslim leaders contribute to the spread of Islam in West Africa?

Muslim leaders contributed to the spread of Islam in West Africa in various ways. Firstly, their moral standard and mode of worship impressed the local people. The Muslim leaders' lifestyles and conduct showed them to be upright and honest people, which appealed to the people of West Africa. Secondly, they introduced Islam alongside essential and indispensable commodities, such as salt, which were needed in West Africa. This made the people of West Africa more willing to accept Islam as they saw it as a necessary part of their lives. Thirdly, some Muslim leaders made acceptance of Islam a major condition for the exchange of goods. This incentivized people to convert to Islam as it would enable them to participate in trade and commerce. Finally, Muslim leaders organized regular preaching and free distribution of essential commodities, which helped to spread the message of Islam and also showed the people of West Africa the benefits of embracing the religion.