Original sentence: At the end of World War I, Transylvania, at the time a territory of the Austro-Hungarian empire, was occupied by the Romanian army.Shortly before, the Romanian National Council (representing the Romanian population), and representatives of the Germans had taken the decision of unifying the province with Romania.The Treaty of Trianon established the Romanian border with the new Hungarian state
Edited sentence: At the end of World War I, the Romanian National Council of Transylvania (representing the majority of the population), and representatives of the German population, took the decision of unifying the former Austro-Hungarian province with Romania.In 1919, Romania occupied the disputed territory and crushed the Hungarian Soviet republic of Bela Kun.The Treaty of Trianon recognized the Romanian border with the new Hungarian state