The prehistory of Vanuatu is obscure; archaeological evidence supports the commonly held theory that peoples speaking Austronesian languages first came to the islands some 4,000 years ago. Pottery fragments have been found dating back to 1300–1100 B.C.E. The first political party was established in the early 1970s and originally was called the New Hebrides National Party. One of the founders was Father Walter Lini, who later became Prime Minister. Renamed the Vanua'aku Pati in 1974, the party pushed for independence; in 1980, the Republic of Vanuatu was created.