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
Principality of Transylvania (1570–1711) West and north Royal Hungary, Ottoman Hungary, and the Eastern Hungarian Kingdom under Ottoman suzerainty, which later became the Principality of Transylvania where Austrian and Turkish influences vied for supremacy for nearly two centuries. The Hungarian magnates of Transylvania resorted to policy of duplicity in order to preserve independence. Transylvania was administrated by Isabella, John Sigismund's mother from 1541 to 1551, when it fell for 5 years (1551–1556) under Habsburg rule. The House of Zapolya gained again the control of Transylvania in 1556, when the Diet of Szászsebes elected Sigismund as prince of Transylvania. Transylvania was now beyond the reach