The 1926 Soviet census (Russian: Всесоюзная перепись населения, All-Union census) took place in December 1926. It was the first complete all-Union census in the Soviet Union and was an important tool in the state-building of the USSR, provided the government with important ethnographic information, and helped in the transformation from Imperial Russian society to Soviet society. The decisions made by ethnographers in determining the ethnicity (narodnost) of individuals, whether in the Asiatic or European parts of the former Russian Empire, through the drawing up of the "List of Ethnicities of the USSR", and how borders were drawn in mixed areas had a significant influence on Soviet policies.[1] Ethnographers, statisticians, and linguists were drawing up questionnaires and list of ethnicities for the census. However, they also had the more ambitious goal of deliberately transforming their identities according to the principles of Marxism–Leninism. As Anastas Mikoyan put it, the Soviet Union was "creating and organising new nations".[2]