Indonesia, West Africa, China and the Philippines
India, Africa and Southeast asia
It spread through simply trade and conquest.
ISLAM
Trade positively impacted the spread of Islam. As Muslim merchants brought their wares to places outside of the Islamic Caliphates, they were able to introduce West Africans, East Africans, and Indonesians the tenets of their faith and seed new Muslim communities.
Islam first spread along TRADE ROUTES since merchants could often bring the religion to places too far away to effectively conquer.
royal marriages, missionaries, conquest and trade.
Muslim merchants set up trading posts throughout southeast Asia and taught Islam to people there.
spread ideas through trade, conquest, and expansion
Islam spread to the island of southeast Asia through traders and merchants. Many of the city states in Malaysia and west Indonesia had a strong maritime trading orientation and as a result, accommodated many Muslim merchants from Arabia, India, and the East African coast. As a result, the ideas of Islam became incorporated in those areas, supplanting the previous Buddhism. In the rest of Southeast Asia, such as Thailand, Cambodia, Laos, Burma, and Vietnam, the orientation was much more inland and river-based trade, meaning that Islam did not have the same inroads and access.
Islam spread fairly easily in Mali, as the people practiced Islam with their traditional religions. Islam first reached West Africa through trade.
Trade.
Islam was not spread primarily through forced conversion, as many people often believe. While there were instances of coercion, the majority of conversions occurred through trade, personal relationships, and the appeal of Islamic teachings. Additionally, the religion spread through cultural exchange and the efforts of missionaries, rather than solely through military conquest.