Kaunas, Siauliai (Shavli), Vilna were the three main ghettos.
The ghettos were mainly in Poland, Lithuania, Belarus, Ukraine and Hungary.
Warsaw, Lodz, Krakau.
The German first ghetto was in occupied Poland at Piotrków Trybunalski in October 1939. The Germans went on to establish at least 1,000 ghettos for Jews. The largest ghetto would be the Warsaw ghetto.
Some Gentiles risked their lives by going into the ghettos and smuggling food or helping the Jews escape.
some
ghettos that are not closed, they were ghettos that did not restrict access, to either Jew or gentile.
money
Traditional ghettos were seen as permanent places for Jews to live (separated from the rest of the population). The Nazis, on the other hand, saw the ghettos as temporary - as staging posts in the Final Solution. The last 'traditional' Jewish ghetto - that in Rome - had been opened (liberated) in 1870. The Nazis reintroduced ghettos for Jews in Poland, Lithuania and Latvia in 1939-41 and deliberately kept the food and water supplies inadequate.
London, Liverpool, Leicester, Lincoln, Lebanon, Lithuania...
Lithuania, Latvia and Estonia
Probably Poland, prior to the war they had the largest Jewish popluation of any country in Europe, and after the war they were nearly all gone. _______ Poland lost about 88-89% of its Jewish population in the Holocaust and Lithuania lost about 96%!
The first one who marked Lithuania's territory in a map was Herodotus. Lithuania was never "explored" in the sense of the word, since it was active in trade relations with the Roman Empire, hence was known ever since those times, although in many different names.