The Demak Sultanate was a significant Islamic kingdom in Indonesia, established in the late 15th century. It is located on the northern coast of the island of Java and is known for its role in spreading Islam throughout the region. The sultanate was founded by Raden Patah, who is considered its first sultan, and it became a center for trade and Islamic scholarship. Demak played a crucial role in the Java Sea trade network, connecting various regions and facilitating cultural exchanges. The sultanate is also famous for its impressive mosque, the Great Mosque of Demak, which is one of the oldest mosques in Indonesia and symbolizes the spread of Islam in the archipelago.