Now the whole world had one language and a common speech. (GEN 11:1)And here the confusion begins because chapter 10 implies that the descendants of Noah's sons all had their own languages. Chapter 11 also states it was God who scattered the tribes of Noah's sons around the world (GEN 11:9), but chapter 10 implies that they just spread that way - no mention of God doing the scattering is made in chapter 10. Bit of an oversight. There also seems to be some confusion over whether the clans had many languages (GEN 10) or just one (GEN 11). I guess being kind we can say that they started with one language and then ended up with many - but that doesn't deal with the confusion that chapter 10 implies the clans developed their own language and chapter 11 clearly states God simply confused the one language into many.