This is very loosely related to my previous question on the same text.
Genesis 10:25:
To Eber were born two sons: the name of the one was Peleg, for in his days the earth was divided, and his brother's name was Joktan.
My previous question on this text focused on the phrase "in his days." However, I would now like to focus on the phrase "the earth was divided." What does this phrase refer to? Given that the next chapter in Genesis discusses the Tower of Babel, is that what this text had in mind? If not, what are some other possible explanations for this text?