The political history of Indonesian archipelago during the 7th to 11th centuries was dominated by Srivijaya based in Sumatra and Sailendra that dominated southeast Asia based in Java and constructed Borobudur, the largest Buddhist monument in the world. The history prior of the 14th and 15th centuries is not well known due to the scarcity of evidence. By the 15th century, two major states dominated this period; Majapahit in East Java, the greatest of the pre-Islamic Indonesian states, and Malacca on the west coast of the Malay Peninsula, arguably one of the greatest of the Muslim trading empires, this marked the rise of Muslim states in the Indonesian archipelago.