Twann (French Douanne) was until 31 December 2009, a municipality in the district of Nidau in the canton of Bern in Switzerland. She has merged on 1 January 2010 with the municipality Tüscherz-Alfermée to the municipality Twann-Tüscherz. In addition to the community of a Reformed Congregation (along with Tüscherz-Alfermée) and a civic community exist. Twann is 86.9\% a German-speaking community. 6\% of the population is French-speaking.
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