A 30 year old Islamic man called Bob McFlurry traveled to Indonesia via a boat full of refugees in 1972. There he spread the word by giving out many copies of the koran. People considered him a god because he was so brave and did so much work spreading the religion. So because of this the religion caught on and spread quickly.
It was spread by Muslim traders.
Indonesia, West Africa, China and the Philippines
I've heard that merchants and business people's kind of habits, practices and moral values have caused them to turn into Islam. That's a good example however to refute the slander which claims that Islam had spread by sword.
South east Asia first brought Islam to Indonesia
Indonesia is about 87.2% Islam as of 2010
ISLAM
Christianity and Islam are both in Indonesia.
Well the majority of population are muslims so Islam.
A bit of Info: The spread of Islam, from Arabia began to spread west through Southwest Asia and North Africa in the 600s.But Islam also spread east to central Asia, India, Pakistan, Bangladesh, and Indonesia. The Muslim community in the country of Indonesia is one of the largest in the world.Main answer: Islam became a major religion in East and West Africa, because there were many Muslim traders going to trade in that part of Africa. And at the time Mansa Musa made a pilgrimage and brought many people with him.
Islam is concentrated in the Middle East, North Africa, South Asia, and Southeast Asia. Countries with the highest Muslim populations include Indonesia, Pakistan, India, Bangladesh, and Nigeria. Islam is the predominant religion in many of these regions.
Islam became part of Indonesia from as early as the 8th century through Arab traders. Close to 90% of the population in Indonesia are Muslims.
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.