Two key things came about in the immediate aftermath of the flood.

The foundations of civil government

These were laid in the covenants imposed on mankind and the creatures of the earth.

“5 I will surely require your blood of your lives. At the hand of every animal I will require it. At the hand of man, … 6 Whoever sheds man’s blood, by man will his blood be shed, …”
Gen 9:5 WEB

So a communal duty was established to put to death anyone who unlawfully kills a man, whether man or beast. The ways and means are not specified, but the duty is given to all men. This laid a foundation for limiting the increase of wickedness, an instrument for protecting the life and span of men.

The Tower of Babel

Originally “The whole earth was of one language and of one speech.” Gen 11:1 WEB. They were supposed to spread out and “Be fruitful, and replenish the earth.” Gen 9:2 WEB. Even so, that was not the inclination of our forefathers. It seems they were traveling eastward as a group, and found what was then a fertile land in Shinar.

“They said, “Come, let’s build us a city, and a tower, whose top reaches to the sky, and let’s make us a name; lest we be scattered abroad on the surface of the whole earth.” ”
Gen 11:4 WEB

Men were already confused about what was good to do, now God sees these directions and says they are not good ones.

A Deliberate Division of Men Inclined to Wickedness

“6 Yahweh said, “Behold, they are one people, and they have all one language; and this is what they begin to do. Now nothing will be withheld from them, which they intend to do. 7 Come, let’s go down, and there confuse their language, that they may not understand one another’s speech.” ”
Gen 11:6-7 WEB

Now the rightful power to kill the evil doer would never be a monopoly of one group of men, thus another hedge against the evil doers. That power would be divided by tribe and nation.

“Therefore the name of it was called Babel, because Yahweh confused the language of all the earth, there. From there, Yahweh scattered them abroad on the surface of all the earth. ” Gen 11:9 WEB

Sin is often confused about what is right ro good.

Sin often deliberately confuses right and wrong,
so it may do whatever it wishes.

Sin often brings a curse of confusion
because of our evil desires.

“Yahweh will send on you cursing, confusion, and rebuke, in all that you put your hand to do, until you are destroyed, and until you perish quickly; because of the evil of your doings, by which you have forsaken me.”
Deut 28:20 WEB

And so it will be at the end that,

“11 Because of this, God sends them a working of error, that they should believe a lie; 12 that they all might be judged who didn’t believe the truth, but had pleasure in unrighteousness. ”
2Thes 2:11-12 WEB

Babylon has always been about confusion. Symbolic no doubt of Mystery Babylon the Great.

WEB is the World English Bible, a copyright free revision
of the original ASV American Standard Version 1901