In what sense does the text strongly imply that were they were “scattered” (Gen 11:8-9)?

Again, we have already been told that in Peleg’s day “was the earth divided” (Gen 10:25), implying that they were not divided into nations before that (see the question about “they” in 11:2, above). If so, this strongly implies that they migrated from Babel to the homelands that came to be associated with each nation, Mizraim going to Egypt, Japheth going to Greece, etc.