Bislama (ˈbɪsləmɑː; bislaˈma; also known by its earlier French name, bichelamar biʃlamaʁ) is an English-based creole language and one of the official languages of Vanuatu. It is the first language of many of the "Urban ni-Vanuatu" (citizens who live in Port Vila and Luganville) and the second language of much of the rest of the country's residents. The lyrics of "Yumi, Yumi, Yumi", the country's national anthem, are composed in Bislama. More than 95% of Bislama words are of English origin, whilst the remainder comprises a few dozen words from French as well as some specific vocabulary inherited from various languages of Vanuatu—although these are essentially limited to flora and fauna terminology. While the influence of these vernacular languages is low on the vocabulary side, it is very high in the morphosyntax. As such, Bislama can be described simply as a language with an English vocabulary and an Oceanic grammar and phonology. 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. This creole started spreading throughout the Vanuatu archipelago at the turn of the 20th century, as former blackbirds and their descendants began to return to their native islands. Knowledge of this creole would facilitate communication not only with European traders and settlers, but also between native populations, and because Vanuatu is the most language-dense country in the world (one count puts it at 113 languages for a population of 225,000), Bislama usefully serves as a lingua franca for communication between ni-Vanuatu, as well as with and between foreigners.