Northern Transylvania gouge a claw-shaped corridor through northwestern Romania, including a large Romanian-populated area, in order to incorporate this Hungarian-majority area within Hungary. Population of Northern Transylvania, as per 1930 Romanian census: Before the arbitration, in 1940, according to the Romanian estimates, in Northern Transylvania there were 1,304,903 Romanians (50,2%) and 978,074 (37,1%) Hungarians. One year later, after the arbitration, according to the Hungarian census, the population of Northern Transylvania has dissimilar ratios, it counted 53.5% Hungarians and 39.1% Romanians. Hungary held Northern Transylvania from 1940 to 1944. In 1940 ethnic disturbances between Hungarians and Romanians continued after some incidents following the
Celts in Transylvania area. The Celts exercised politico-military rule over Transylvania between the 4th and 2nd century BC and brought with them a more advanced iron-working technology. They were also responsible for the spread of the potter's wheel into a much wider area than the one they occupied. Large areas of ancient Dacia, which were populated early in the First Iron Age by Thracian people, were affected by a massive migration of Iranian Scythians moving east to west during the first half of the first millennium BC. They were followed by a second equally large wave of Celts migrating west to east. Celts