 The sugar industry was abandoned, replaced by vanilla, coffee, copra, sisal, then fragrant plants such as vetiver, citronelle, sandalwood and especially ylang-ylang, which later became one of the symbols of the island.Mayotte was the only island in the archipelago that voted in referenda in 1974 and 1976 to retain its link with France and forgo independence (with 63.8% and 99.4% of votes respectively).The United Nations' constant policy regarding decolonisation has been that independence must be effected in the framework of the colonial borders and for that reason it has not recognized the validity of that referendum; over twenty UN resolutions have condemned France's annexation of Mayotte, while the independent Comoros have never ceased to claim the island.