The whole earth was of one language This even heathen writers acknowledge; and that language was, probably, the Hebrew. They journeyed from the east of Shinar, where Noah had settled when he left the ark. They were, therefore, now travelling westward.
Related Commentaries of Genesis 11:1
Genesis 11:1-2
1 And the whole earth was of one language,a and of one speech.
2 And it came to pass, as they journeyed from the east, that they found a plain in the land of Shinar; and they dwelt there.