Easton's Bible Dictionary: M. G. Easton, M.A., D.D.
From the time of Pompey the Great (B.C. 63) numbers of Jews from Palestine and Greece went to Rome, where they had a separate quarter of the city assigned to them. Here they enjoyed considerable freedom.
Thus were the Jews everywhere scattered abroad. This, in the overruling providence of God, ultimately contributed in a great degree toward opening the way for the spread of the gospel into all lands.
Dispersion, from the plain of Shinar. This was occasioned by the confusion of tongues at Babel (Gen. 11:9). They were scattered abroad "every one after his tongue, after their families, in their nations" (Gen. 10:5, 20, 31).
The tenth chapter of Genesis gives us an account of the principal nations of the earth in their migrations from the plain of Shinar, which was their common residence after the Flood. In general, it may be said that the descendants of Japheth were scattered over the north, those of Shem over the central regions, and those of Ham over the extreme south. The following table shows how the different families were dispersed: