High Quality Content by WIKIPEDIA articles! Bulgarian Agrarian National Union also tiranslated to English as Bulgarian Agrarian People`s Union (Bulgarian: Български земеделски народен съюз, Balgarski Zemedelski Naroden Sayuz; BZNS) is a political party devoted to representing the causes of the Bulgarian peasantry. It was most powerful between 1900 and 1923. In practice, it was an agrarian movement. Unlike the socialist movements of the early 20th century, but was devoted to questions concerning agriculture and farm workers, rather than industry and factory workers. The BZNS, one of the first and most powerful of the peasant parties in Eastern Europe, dominated Bulgarian politics during the beginning of the 20th century. It is also the only peasant party in Europe that came to power. Member of the International Agrarian Bureau.