Original sentence: After the World War II, Istria was assigned to Yugoslavia and in the process, from (1945 - 1947), an estimated 15,000 Italian were killed while 300,000 survived, although most of them were forced to leave the place of their ancestors and sprlawled around the world.It was a real ethnic cleansing.Its administrative center is Pazin/Pisino.Later Nazi occupation spoiled otherwise tolerant ethnic relations
Edited sentence: After the World War II, Istria was assigned to Yugoslavia, after the long process at numerous conferences.After the change, new ruler immediately began with the persecution of Croats.After the war, as a legal possibility, to local population was given the opportunity to choose to stay in Croatia in Yugoslavia, or to opt for leaving to Italy.At the same time, fascist Italy declared all population with Slavic suranmes on -ich as "Italians".During and after the liberation of Istria from fascist rule, a certain number of Italians was killed.In international recognition of Istria as Croatian and Yugoslav territory, big role had the decision of local ZAVNO, local anti-fascist governing body, made of majority of Istrian population, Croats.Its administrative center is Pazin.Many Croat families choose that opportunity in order to use this opportunity to leave for Western countries.Many thousands of Croats were forced to leave Istria, many of them settling in Croatian Littoral (part of Kingdom of Yugoslavia, at the time), to Zagreb or left abroad, to USA and Australia.Some of them were innocent, some of them openly collaborated with fascist regime and in persecution of Croats.Still, the number of Italians from the statistitics of those times is exaggerrated, because official statistics of fascist-ruled Italy wasn't recognising Croat majority; in fact, it even brought the laws that forbid "funny Slavic names", as wel as it organised special committees for renaming of toponyms and persons