Genesis 10

1 The sons of Noah apparently wrote the preceding section.
5 Japheth's descendents inhabited the coast of the Mediterranean.
9 Whether this was a boastful title or not, there was no doubt Nimrod could hunt like no other.Nimrod was apparently a great leader and organized people (his family?) into several cities.
20 This might refer to the confusion of languages at Babel.
25 Some believe that this would have been the time when the original continent was divided into the several continents present today. However, a change of this proportion would have caused destruction on par with the Flood itself.I feel that the better interpretation is that the continent broke up with the "foundations of the deep" and that the resulting continents separated under the floodwaters.This passage then would indicate that the people were divided when God confused the languages (Gen 11)