The table of nations found in the Book of Genesis has been confirmed by studying the records of various cultures of the world. But on to the main point...
Findings after many decades of observation
Evidence for one single proto language?
Evidence for the evolution of speech?
Evidence pointing to Babel
‘ … it should be possible to group [languages] together into “families” like the Indo-European family of languages. But there should be no links between one “family” and another. That is because, in this model, each distinct language family is the offshoot of an original Babel “stem language” which did not arise by chance from a previous ancestral language.’14