Fiji has long been a multi-ethnic country, with a vast majority of people having multi-racial heritages even if they do not self-identify in that manner. The indigenous Fijians are of mixed Melanesian and Polynesian ancestry, resulting from years of migration of islanders from various places mixing with each other. Fiji Islanders from the Lau group have intermarried with Tongans and other Polynesians over the years. The overwhelming majority of the rest of the indigenous Fijians, though, can be genetically traced to having mixed Polynesian/Melanesian ancestry.