Introduction of Islam
The spread of Islam to Old Malaysia was brought by the activities of the Arab traders, missionaries, and teachers who introduce their religious beliefs among the Malays.
The foundation of Islam was laid in Malaysia by the Arabian scholar Mudum, who arrive in the Malay Peninsula in Malacca a rather tenuous foothold for Islam.
About 1380, he proceeded to Sulu and preached the doctrines of Mohammed. In 1390, Raja Baginda, one of the petty rulers of Menankabaw, Sumatra, arrived in Sulu and promptly converted some of the natives to Islam. His religious activities were followed by Abu Bakr who, about 1450, left Palembang for Sulu. He married Raja Baginda's dauther, Paramisuli. After Baginda's death, Abu Bakr exercised his powers as sultan and established a government patterned after the Sulatanate of Arabia. Islam spread rapidly to all parts of Sulu.
In Mindanao, Serif Kabungsuan, who meanwhile arrived from Jorohe with his men, immediately began laying the foundation of Islam. He converted many tribes to his religion and, having married into am influential family, made himself the first sultan of Mindanao.
From then on, Islam rapidly to the Visayas and Luzon. The arrival of the Spaniards in the second half of the 16th century and the subsequent conquest of Luzon led the Muslims to retreat to the south where they maintained their Independence from the foreign powers to the end of the Spanish regime.
Between 900 and 1200 A.D., another group of immigrants cam to the Philippines from southern Annam. Known as Orang Dampuan or men from Champa, they established trading posts in Sulu, resulting in a flourishing trade between Sulu and southern Annam. The Orang Dampuans were not politically minded and had not intention of dominating the People of Sulu, who were called Buranuns. Their interest lay in trade. As usually happen, the Orang Dampuans, because of the increasing prosperity, arouse the jealousy of the Buranuns who, in a fit of anger, massacred some Orang Dampuans, This latter, who had superior weapons, took their bloody revenge on the Buranuns and, having leveled tgeir enemy's villages to the ground, sailed to their homeland. It was not until the 13th century that the Orang Dampuans returned to Sulu to trade peacefully with their natives.
This is the history where Islam began in the Philippines