It was spread by Muslim traders.
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 was first brought to Ghana through Muslim traders and missionaries.
They brought the religion of Islam with them, which led to Ghana becoming a Muslim Empire.
Islam.
Berber traders introduced written language (arabic) and brought islam to west Africa.
Indonesia is world's most populous Muslim country. 87.2 percent of total population is Muslim and 99 percent follow Sunni Islam. Islam was introduced to Indonesians in 13th century and gradually gained popularity with help from traders who played an important part in spreading Islam. Sumatra was the first region to embrace Islam.
The Muslim traders went to different parts of the world. Local people noticed that the Muslims were kind, respectful and helpful to them. They were honest and truthful in their dealings. They were not cheaters. Thus the local people were so impressed by the morality and outstanding character of the Muslims that they embraced the Universal teachings of Islam. Likewise, when the non-Muslim traders met the Muslim traders they also spread the stories of the honest dealings of the Muslims. Thus, in this way the Muslim and non-Muslim traders helped in the spread of 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.
The First traders where Vietnam,China India and Indonesia
Indonesia is about 87.2% Islam as of 2010
Traders in Africa had contact with Arabia and converted to Islam