With over 1.2 billion practicing Muslims worldwide, Islam is the second most widely practiced religion, after Christianity. Islam reached West Africa through trans-Saharan trade, which brought sub-Saharan Africans into contact with Arab merchants and teachers and with nomadic North African Berber tribes, like the Tuareg [TWAH-reg], the majority of whom had converted to Islam by the end of the 9th century. Today, 90% of Mali’s population is Muslim, and the Tuareg continue to maintain distinct cultural traditions, like those involving the tende drum.