 The third part of the exodus took place after the Paris peace treaty, when Istria was assigned to the Socialist Federal Republic of Yugoslavia, except for a small area in the northwest part that formed the independent Free Territory of Trieste.The coastal city of Pula was the site of the large-scale exodus of its Italian population.Between December 1946 and September 1947, Pula almost completely emptied as its residents left all their possessions and "opted" for Italian citizenship.