Genesis 9. From Noah's sons came the people who would repopulate the Earth and continue God's creation, Man and Woman. Noah's life span was 950 years. Noah's descendants developed into various named clans and tribes. It appears as if the continuity of God's message through Noah was being lost. Their is no indication that God's message is being passed on to guide the lives of these descendants. Different spoken languages developed, placing another barrier to effective communication between people.
Then in Genesis 11, apparently after some passage of time, the people in the world somehow began to speak one language. Where was the direction to follow God during this period? It seems strange that after God saved Noah's family, none of the story of God's destruction of all life on Earth, except Noah and his family was passed on to Noah's descendants to guide them to correct behavior in God's eyes? If they had known about the prior destruction of life by God would misbehavior and people idolizing themselves, not God, have followed?
At this point the need for guidance was critical. God's response in Genesis 11:7 is to confuse the people so they no longer speak the same language and can't effectively communicate with each other? People were then scattered all over the world. My reaction to this passage was how is this method effective in teaching the people the principles God wanted us to follow? How was this method effective in bringing the people closer to God?
What follows in Genesis 11 seems to be a period where people seemed to be wandering, with lack of effective guidance. We were back to our own means, which meant progress into what God wanted us to be was hopeless.