It was the dominant force in the region until the arrival of the Portuguese.
British Dictionary definitions for Portuguese
the official language of Portugal, its overseas territories, and Brazil: the native language of approximately 110 million people. It belongs to the Romance group of the Indo-European family and is derived from the Galician dialect of Vulgar Latin
(pl) -guese. a native, citizen, or inhabitant of Portugal
relating to, denoting, or characteristic of Portugal, its inhabitants, or their language
1610s, the language, or a resident, of Portugal; 1660s as an adjective, from Portuguese Portuguez (see Portugal + -ese). The ending was vulgarly mistaken for a plural in English, and false singular Portugee (1830) was formed (cf. Chinee from Chinese). For Portuguese man-of-war, see man-of-war.