Jakarta, formerly Jayakarta, capital of the Republic of Indonesia has within approximately four centuries developed as a metropolitan city. The current theory states that islamization in the archipelago can be accredited to Moslem traders. They have been present for centuries in the north western part of the islands. Jayakarta at that time, can be put on the same level as other Moslem states of the north coast of Java, such as Cirebon and Banten.