> There is precisely 1 country on the planet that accepts jews from where ever
It is difficult to discuss the history, which is part of the history of anti-semetism. I think it was that anti-semitism and the Evian Conference that directly led to the British Mandate. But if attempting to understand these events, it is difficult because even attempting to talk about what these leaders and many others believed, their belief in stereotypes, draws accusations of anti-semetism. But I am going to risk it, not because it is a valid perspective, but because it happened, it was a common belief that Jewish populations put economic strain on a country by nepotistic practices and hoarding wealth, and this belief was behind the reluctance of the Evian Conference participants to accept refugees; to avoid accepting Jewish refugees, the British Mandate created Israel. The British just grabbed hold of a pre-existing dream of some Jews (Zionism) to return to the "Promised Land," and promoted it. But I think the truth behind this detail of anti-semitism is that the lazy envy the industrious and successful, and unjustly those among Jewish populations that were successful and wealthy became representative of all Jews. The fallacy here is hasty generalization, thus the sentiment was always invalid.
The British Mandate was a very weird thing because it handed victory over the current residents of the area to a conquered (effectively) alien nation. But Israel would not have been able to exist if not for the sheer amount of backbreaking labor and the terraforming of non-arable land by the original settlers (of the 20th Century, but migrations of Jewish populations to the Four Holy cities predated the British Mandate by about 4 centuries).
Contrasting the horrifying treatment of Jewish populations with the horrifying treatment of Native American populations and the horrifying treatment of African populations reveals what is distinct in anti-semitism compared to other forms of racism. It was and is all very very bad, so it is a bit of a shock that anti-Palestinian racism is also a thing and rampant. It seems for every identifiable culture there is a particular flavor of racism. Fundamentally, racism is ignorance and hatred overpowering the ability to reason.