The Portuguese first landed in Ambon in 1513, but it only became the new centre for their activities in Maluku following the expulsion from Ternate. European power in the region was weak and Ternate became an expanding, fiercely Islamic and anti-European state under the rule of Sultan Baab Ullah (r. 1570 – 1583) and his son Sultan Said. The Portuguese in Ambon, however, were regularly attacked by native Muslims on the island's northern coast, in particular Hitu which had trading and religious links with major port cities on Java's north coast. Altogether, the Portuguese never had the resources or manpower to control the local trade in spices, and failed in attempts to establish their authority over the crucial Banda Islands, the nearby centre of most nutmeg and mace production. Following Portuguese missionary work, there have been large Christian communities in eastern Indonesia particularly among the Ambonese. By the 1560s there were 10,000 Catholics in the area, mostly on Ambon, and by the 1590s there were 50,000 to 60,000, although most of the region surrounding Ambon remained Muslim.