Until this point in the Bible, the whole world had one language. The people of the earth became skilled and decided to build a Tower that would reach Heaven.
God came to see the Tower they were building and perceived their intentions. In his infinite wisdom, he knew this stairway to Heaven, would only lead the people away from God. As a result God caused them to speak in different languages, so they would not understand each other, and thus thwarted their plans.
Today with our Transgenic crops, Intergalactic flights, Cloning and other Technological advances, are we building another Tower to challenge the Supremacy of God. We already do not understand each other. Are we heading for the next Armageddon?