1. Do you have any sources younger than 50+ years?
2.
so languages can be traced back to an original source ...this is evidence of a single language being spoken at a particular time in the past
This does not follow. You've shown the possibility of one ancestor language for the Indo-European language family and the possibility of one ancestor language for the Bantu language family.
3.
and if you want to believe in the babel story or not, you simply cannot deny the possiblity of it
Sure I can, and do.
soon I discovered that this rock thing was true
Jerry Lee Lewis was the devil
Jesus was an architect previous to his career as a prophet
All of a sudden i found myself in love with the world
And so there was only one thing I could do
Was ding a ding dang my dang along ling long - Jesus Built my Hotrod MinistryLive every week like it's Shark Week! - Tracey Jordan
Just a monkey in a long line of kings. - Matthew Good
If "elitist" just means "not the dumbest motherfucker in the room", I'll be an elitist! - Get Your War On
*not an actual doctor