Balanini pirates, fervent Muslims, disputed the coast of northeastern Borneo (modern Sabah) with the sultanate of Brunei.
The Balanini pirates assisted the sultanate of Brunei by raiding opposing kingdoms.
mnli hypothesis: The Balanini pirates assisted the sultanate of Brunei by raiding opposing kingdoms. premise: Balanini pirates, fervent Muslims, disputed the coast of northeastern Borneo (modern Sabah) with the sultanate of Brunei.