Answer:
Islam spread in sub-Saharan West Africa in 1200–1450.
Step-by-step explanation:
The spread of Islam in West Africa became achievable because of the conversion of the kings in the Mali Kingdom. In the early stage, the Mali Kingdom was a multi-ethnic empire with various religious and cultural societies. The residence of the Muslim advisers and instructors in the empire court led to the spread of Islam. In the 13th century, the empire converted into a Muslim state under Mansa Musa.