Very few of the Ladino-speaking Sephardic Jews of Andalusia in southern Spain would have survived the 1400s, after the expulsion from there of the Muslim Moors (during whose rule the Jews had flourished), without the main refuge they found, across the Mediterranean, in the Muslim-majority countries of North Africa and West Asia.
A few of these Sephardim, also escaping by sea, found refuge instead in other places, including Protestant countries such as the Netherlands and England, where they congregated in cities like Amsterdam and London, contributing to the growth of business and finance there.
Very few of the mainly Yiddish-speaking Ashkenazi Jews, who had settled in Eastern, Central, and Western Europe, would have survived the 1930s and 1940s in Europe had it not been for those same refuges in the Muslim majority countries across the Mediterranean (that had not been occupied by the German and Italian militaries) plus the refuge provided by the USSR--and the eventual liberation of the survivors in Eastern and Central Europe by the Soviet Red Army.
Some of the Ashkenazim of Central and SE Europe reached the Mediterranean ports of SE Europe via Yugoslavia and Greece, aided by the multiethnic, communist-led guerillas, based mainly in the Balkan mountains, fighting the German occupation.
We should note that the Anglo countries had shut their doors to all but a few select Jews during the Shoah or Holocaust that lasted from the 1930s to the end, in 1945, of WWII in Europe. During this, millions of Jews were killed, along with Gypsies and others, while Slav prisoners were being worked to death.
Close to 3 million people were killed, during WWII, in the USSR alone, a number close to those killed in China.
However, had it not been for the existence of the USSR, in which they were protected, even more Jews would have been killed by the Nazis and their many collaborating governments and groups.
It was the Soviet Red Army that fought the long, hard land war in Europe that eventually liberated all of Eastern Europe, including especially its surviving Jews, Gypsies, and other minority groups, took Berlin and drove deep into the rest of Germany, where they waited for their Anglo allies to arrive in the last stages of WWII in Europe.
The main contribution of those allies to the fight against the Axis powers in Europe had been the aerial war, waged mainly out of Britain, against the Axis powers in Europe.
In sum, had it not been for the Arab, Turkish, and other Muslims, starting in the 1400s, and for the communists and socialists of Eastern and Southeastern Europe in the 1930s and 1950s, there would have been even fewer European Jews left.
The history of mutual animosity, over many centuries, between Jews and at least European Christians, led sadly by the Catholic Church, is well known, as are the atrocities carried out by the European Christian crusaders against Jews and Muslims in Palestine and the rest of the Levant.
Shamefully, some Jews, both secular and religious, have been intent, over my lifetime, starting earlier, on doing to the natives of Palestine and adjacent areas what the Romans did to many of the Jews there long ago and what the Catholic Church in medieval times and the Nazis and others, in the 1930s and 1940s, did to the Jews of Europe—with the history of the pogroms in Europe bridging these two great expulsions and massacres of the Jews in that continent.
The Jewish Zionists have been strongly supported in this settler colonial venture in Palestine by their Christian Zionist allies, beginning in Britain and later and currently in the USA. These believe that the Jews of Europe and elsewhere must be congregated in Palestine for Jesus to come there and convert the Jews to Christianity, with those resistant to this being cast into Hell.
Many of the natives of Palestine, be they Christian, Muslim, Samaritan Judaic, or other, might in fact be the closest descendants of the inhabitants of Palestine in ancient times, including the Jews who were not expelled later by the Romans, soon after the time of Jesus of Nazareth. They may also be still carrying the genes of the Canaanites and others who were there even earlier, along with those of the Arabs and others who arrived there later.
2025 December 15, Mon.
Berkeley, California
Note: This began as a reply to a nasty comment on Facebook by Jarod Keren.