The spread of Islam in Singapore was due to a number of factors, including:
* Trade: Singapore was a major trading hub in Southeast Asia, and Muslim traders from India, the Middle East, and the Malay Archipelago brought Islam to the region.
* Missionary activity: Muslim missionaries from India and Arabia played an important role in spreading Islam in Singapore. These missionaries preached the faith to the local population and established schools and mosques.
* Political support: The rulers of Singapore were supportive of Islam, and they encouraged their subjects to convert to the faith.
As a result of these factors, Islam became the dominant religion in Singapore by the 16th century. Today, Muslims make up about 15% of the population of Singapore.