It is simply too late for this. You can't unscramble an egg.
Aside from the fact that this question is incredibly slanted, there are several major reasons why Zionists do not "go back to Europe". 1) European Anti-Otherism: The European concept of a nation-state was dependent on the idea that all of the people in any particular nation were of the same ethnic stock and heritage. Jews were branded by this system to be "the Other" and were regarded at best as possible equals and at worse as traitors, spies, thieves, and fifth columns.
When the Dreyfus Affair turned out marches in Paris that said "Death to the Jews" on account of a kangaroo court against a particular guiltless Jew, it became clear that the Jew could not be integrated into Europe. After the Holocaust, the strongest proof that the Jew and the European Nation-State were irreconcilable, this view persists. In Europe, it is now directed at the Moslems since the Jews are not large enough of a threat to the European System.
2) Historical Myth of Andalucia: The question as written is based on a historical myth. The lack of constant violence is not peace or else what is going on inside of Iran (i.e. Massive amounts of torture and vote-rigging by fundamentalist ideologues) would be peace.
The Muslim idea of the "Andalucian Solution" is not based on historical fact or precedent. In Andalucia, sure Jews lived in relative security and prosperity for the Middle Ages. It did not come close to peace, though, in that Jews were still repressed, still taxed, and still subject to occasional pogroms.
The question supposes that this system, one that rejects universal rights and freedoms applicable to all people, is viable today and would be desirable to non-Muslims is preposterous and absurd. 3) Palestine Was Violent: The idea that there was peace specifically in Palestine prior to World War II is fallacious. Palestine had been the site of numerous militias and violent activities perpetrated by both Arab Jihadists and Zionist Settlers during the Interwar period.
Prior to World War I, there were violent attacks by Muslims under the protection of the Ottoman Banner on Jews and Christians in the territory to recover extra funds for the government. The idea that the British Mandate of Palestine was peaceful actually runs counter to historical evidence. 4) I Was Born Here!
: Most Israelis today were born in Israel, have Israeli nationality, go to Israeli schools, and work Israeli jobs. They have lives, families, and history in Israel. Why should they be forced to abandon everything they've built to feed a dream based on non-truth.
Additionally, there are 6 million Israeli Jewish citizens while there are only 4 million Palestinians in both Israel's borders and the Palestinian Territory of the West Bank. If anybody should be forced to move on pure numbers, it should be the Palestinians. 5) Mizrahi Jews: Upwards of 40% of the Jewish community in Israel is actually from Arab countries, not the United States or Europe.
They fled under pain of death at the same time as the Palestinians did and in roughly equivalent numbers. The Arab States where they were living were inhospitable at that point (counter to Arab retellings of the story) and have become even more Anti-Semitic with the Rise of Islamism in the Arab World. As a result, if Israel were to un-exist, they would be relegated to torture and murder in the countries of their origin.
6) Immigration and Quota Laws: The United States and Europe have quota regulations and laws restricting the ingress of people from foreign lands. Even if the Jews wanted to leave, which they don't, they would not be able to do it with any real immediacy. Furthermore, most places in Europe where Jews came from no longer have any real Jewish population and would cause problems and strife in their areas of Europe.
7) Historical Connection: All of the above regions fail to note how important the Land of Israel is to the Jewish people. It is the location of their holiest sites, which have been and continue to be abused and attacked by the Muslims who live there (such as the Cave of Machpelah). Therefore, the idea of leaving those sites to Muslim control again is unthinkable.
Jews consistently find archaeological evidence of their past and of their ancestry. Ahad Ha'am, an early Zionist poet, explained that the Jewish Soul is intrinsically connected to his history and in the same way that a German-American can never be as properly German as a German in Germany, the People of Israel can never be as properly Jewish if they are not in the Land of Israel. The relics in that land speak to a Jewish sensibility and character.
8) American Jews: Most of Israel is of Old-World Provenance. Since the United States was beset with few pogroms and general tolerance for different religions, Jews in the United States never emigrated en masse to Israel. Some did, but most stayed behind.
As a result if all of the American and American descended Jews returned to the United States, Israel would have lost less than 5% of its Jewish population.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.