That Emperor Antoninus (aka Marcus Aurelius) became a ger is stated in the Yerushalmi Talmud Megilla 72.
That Emperor Nero became a ger is stated in the Bavli Talmud Gittin 56.
That Onkelos, nephew to Emperor Titus, became a ger, ibid.
"The great kingdom of Rome was built by Zepho, son of Eliphaz, son of Esau" (Yelamdeinu, Batei Midrashos 160).
Yitzhak's blessing to Esau "thy dwelling will be the fatnesss of the earth" (Breishis 27:39) is that his descendants would inherit Italy (Rashi).
Sounds like you're saying the whole roman empire was Jewish. Without a doubt you are misinterpreting these statements which are not historical. Rav Sherira Gaon makes no mention of this. He mentions the positive relations between Rebbe and the emperor which enabled his compiling of the mishna by easing the pressure on the Jews and the edicts against the chachamim. That's it.
Also when I said it wasn't in the Talmud, I was referring to the Bavli, however I have not seen the Yerushalmi you reference. I hasten to add that if it does say what you claim, it is probably not meant literally because no outside evidence corroborates this. On instinct, I am sure it is midrash (like the tale about Nero certainly is) and it is not telling over "history" because that was not chazal's concern with midrash. But I will have to look into it to see what is being said. Maybe aurelius was an actual ger according to one tradition. We shall see.
Also, I'm not sure why it's relevant to say here that Onkelos was a ger. Everyone knows and accepts that. And there were many gerim in those times. But Onkelos was not the
Roman emperor which would be quite a remarkable thing that perhaps history might slightly take note of if it happened.
In any case, all of this departs from the point of what I was saying which is that there is no question that non-Jews/Europeans (even descendants of Esav if you want to call them that) are non-Jews and Jews are Jews. You are conflating Europeans with Jews for some strange reason. Jews are supposed to have their own nation and with that nation they can provide for themselves, defend themselves, do all the things that all men are capable of. We do not need to farm out anything-other-than-learning as if we are incapable to live on our own and with G-d's help. There was a time when the great chachamim worked for a living and learned trades, and fought in battle, and they would think you are nuts for saying these things. But you see the present-day reality when many so-called "learners" are uneducated or unemployed and incapable of other things. The reality is that they are capable, they just don't know it, and like you, they have been led to believe that those things are not for them because they are supposedly "goyishe" things not Jewish things. What a scandal. Why do you buy into such garbage and propagate it here? Why do you buy into the myth that Jews are defenseless and helpless and weak and cannot fight, and why do you propagate it here?