major success for Tanzania was the Moshi coffee auctions that attracted international buyers after the annual Nairobi auctions. The disastrous Tanganyika groundnut scheme began in 1946 and was abandoned in 1951. UN trust territory After Tanganyika became a UN trust territory, the British felt extra pressure for political progress. The British principle of "gradualism" was increasingly threatened and was abandoned entirely during the last few years before independence. Five UN missions visited Tanganyika, the UN received several hundred written petitions, and a handful of oral presentations made it to the debating chambers in New York City between 1948 and 1960. The UN and the Africans who used the UN to achieve their purposes were very influential in driving Tanganyika towards independence. The Africans attended public gatherings in Tanganyika with UN representatives. There were peasants, urban workers, government employees, and local chiefs and nobles who personally approached the UN about local matters needing immediate action. And finally, there were Africans at the core of the political process who had the power to mould the future. Their goal was political advancement for Africans, with many supporting the nationalist movement, which had its roots in the African Association (AA). It was formed in 1929 as a social organization for African government servants in Dar es Salaam and Zanzibar. The AA was renamed the Tanganyika African Association (TAA) in 1948 and ceased being concerned with events in Zanzibar. African nationalism Beginning in 1954, African nationalism centered on the Tanganyika African National Union (TANU), which was a political organization formed by Julius Nyerere in that year as the successor to the TAA. The TANU won the Legislative Council elections in 1958, 1959, and 1960, with Nyerere becoming chief minister after the 1960 election. Internal self-government started on 1 May 1961 followed by independence on 9 December 1961. Zanzibar Zanzibar today refers to the island of that name, also known as Unguja, and the neighboring island of Pemba. Both islands fell under Portuguese domination in the 16th and early 17th centuries but were retaken by Omani Arabs in the early 18th century. The height of Arab rule came during the reign of Sultan Seyyid Said, who moved his capital from Muscat to Zanzibar, established a ruling Arab elite, and encouraged the development of clove plantations, using the island's slave labor. Zanzibar and Pemba were world-famous for their trade in spices and became known as the Spice