Farther east in the Malay world, Islam began to spread in the 12th century in northem Sumatra and soon Muslim kingdoms were establishd in Java, Sumatra and mainland Malaysia. Despite the colonization of the Malay world, Islam spread in that area covering present day Indonesia, Malaysia, the southern Phililppines and southern Thailand, and is still continuing in islands farther east.
As far as Africa is concemed, Islam entered into East Africa at the very beginning of the Islamic period but remained confined to the coast for some time, only the Sudan and Somaliland becoming gradually both Arabized and Islamized. West Africa felt the presence of Islam through North African traders who travelled with their camel caravans south of the Sahara. By the 14th century there were already Muslim sultanates in such areas as Mali, and Timbuctu in West Africa and Harar in East Africa had become seats of Islamic leaming.
Gradually Islam penetrated both inland and southward. There also appeared major charismatic figures who inspired intense resistance against European domination. The process of the Islamization of Africa did not cease during the colonial period and continues even today with the result that most Africans are now Muslims carrying on a tradition which has had practically as long a history in certain areas of sub-Saharan Africa as Islam itself.