Alright, this is a question posed to the forum because I absolutely do not know any of the specifics, just some vague ideas, such as the black plague pogroms, the crusades, minor doctrinal allowances, etc.
I would like experts to try their hand at this rather than me.
Therefore I pose the question of how we can, while making history as convergent as possible, eliminate Christian or I guess mainly Catholic antisemitism.
The Ideas regarding convergence is history's trajectory should remain similar but there will be fewer or no pogroms, persecution, holocausts, etc.