PLS HELP Which statement best completes the diagram?
Cause
Effect
?
Islam spreads
throughout Africa.
A. Roman missionaries arrive in the Kingdom of Axum.
o Ο Ο
B. Mansa Musa invests in culture and religion.
C. The Kingdom of Axum rises to power in eastern Africa.
O D. The Kingdom of Ghana falls to the Songhai Empire.

I think it's B

Explanation: Islam spread through military conquest, trade, pilgrimage, and missionaries. Arab Muslim forces conquered vast territories and built imperial structures over time. The caliphate—a new Islamic political structure—evolved and became more sophisticated during the Umayyad and Abbasid caliphates.

I hope this helps :D