January 1976, the old administration was officially separated, and two separate British colonies, Kiribati and Tuvalu, were formed. On 1 October 1978, Tuvalu became fully independent as a sovereign state within the Commonwealth, and is a Constitutional Monarchy with King Charles III as King of Tuvalu. On 5 September 2000, Tuvalu became the 189th member of the United Nations. The islands do not have a significant amount of soil, so rely heavily on imports and fishing for food, with fishing and tourism being principal parts of the economy. Because it is a small, low-lying island nation, the country is extremely vulnerable to sea level rise due to climate change. It is active in international climate negotiations as part of the Alliance of Small Island States. History Prehistory The origins of the people of Tuvalu are addressed in the theories regarding the migration into the Pacific that began about 3000 years ago. During pre-European-contact times, there was frequent canoe voyaging between the nearer islands including Samoa and Tonga. Eight of the nine islands of Tuvalu were inhabited. This explains the origin of the name, Tuvalu, which means "eight standing together" in Tuvaluan (compare to *walo meaning "eight" in Proto-Austronesian). Possible evidence of human-made fires in the Caves of Nanumanga suggests humans may have occupied the islands for thousands of years. An important creation myth in the islands of Tuvalu is the story of te Pusi mo te Ali (the Eel and the Flounder), who are said to have created the islands of Tuvalu. Te Ali (the flounder) is believed to be the origin of the flat atolls of Tuvalu and te Pusi (the eel) is the model for the coconut palms that are important in the lives of Tuvaluans. The stories of the ancestors of the Tuvaluans vary from island to island. On Niutao, Funafuti and Vaitupu, for instance, the founding ancestor is described as being from Samoa, whereas on Nanumea, the founding ancestor is described as being from Tonga. Early contacts with other cultures Tuvalu was first sighted by Europeans on 16 January 1568, during the voyage of Álvaro de Mendaña from Spain, who sailed past Nui and charted it as Isla de Jesús (Spanish for "Island of Jesus") because the previous day was the feast of the Holy Name. Mendaña made contact with the islanders but was unable to land. During Mendaña's second voyage across the Pacific, he passed