 The greatest controversy erupted over the city of Trondheim, which had until then been known as "Trondhjem", but in the middle ages era had been called "Nidaros".After the authorities had decided – without consulting the population – that the city should be renamed "Nidaros", a compromise was eventually reached, with "Trondheim".In 1911, the Kristiansund school board circulated among its teachers a document that required that their "oral" instruction had to be in the same language as the district's written language, in this case riksmål.