Passage: During the period of "blackbirding" in the 1870s and 1880s, hundreds of thousands of Pacific islanders (many of them from the New Hebrides – now the Vanuatu archipelago) were taken as indentured labourers, often kidnapped, and forced to work on plantations, mainly in Queensland, Australia, and Fiji. With several languages being spoken in these plantations a localised pidgin was formed, combining English vocabulary with grammatical structures typical of languages in the region. This early plantation pidgin is the origin not only of Bislama, but also of Tok Pisin in Papua New Guinea, and Pijin of the Solomon Islands; though not of Torres Strait Creole in the north of Australia.

Question: What two things were combined to form a localised pidgin?
English vocabulary with grammatical structures typical of languages in the region