Inner Siberut Strait
The Inner Siberut Strait belongs to the waters west of Sumatra, within an archipelago linked by commerce long before European companies arrived. Northern Sumatra provides one important regional context. Perlak was reported as a Muslim town by Marco Polo in 1292, and a royal tomb at Pasai dated 1297 records a Muslim ruler. Samudra Pasai later became an important pepper port and centre of Islamic learning. Islam spread through maritime trading networks, connecting ports with wider intellectual and commercial worlds. These developments do not establish identical institutions on every neighbouring island or a specific event in this strait. European competition later altered the regional balance. Portugal seized Malacca in 1511, while Dutch expeditions arrived in the 1590s. The VOC, formed in 1602, combined commerce with powers to wage war, erect forts and make treaties. Its capture of Jayakarta in 1619 created the headquarters of Batavia, from which its influence spread unevenly across the islands. When the company dissolved in 1800, its possessions passed to the Dutch state. Older port networks and new armed commercial institutions thus formed the wider setting of these passages.