After the flood God told Noah and his sons to multiply and fill the earth. So what did they do?
Now the whole earth had one language and the same words. And as people migrated from the east, they found a plain in the land of Shinar and settled there. And they said to one another, “Come, let us make bricks, and burn them thoroughly.”
And they had brick for stone, and bitumen for mortar.Then they said, “Come, let us build ourselves a city and a tower with its top in the heavens, and let us make a name for ourselves, lest we be dispersed over the face of the whole earth.” (Genesis 11:1-4)