Nice source for lots of controlled vocabularies form the arts & humanities domain available from the Getty Research Institute, now also available as Linked Open Data. Find mor info here: https://www.getty.edu/research/tools/vocabularies/lod/index.html
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Great collection of data from multiple official sources such as the World Bank, the United Nations, the US Energy Information Administration, UNESCO, and the World Economic Forum. Go here: http://www.theglobaleconomy.com/