Welcome to EvC,
Reading between the lines you seem to putting forward the notion that diverse beliefs and languages are contrary to the idea of a single point of origin. Are you prepared to defend this notion? Could you cite some support that two different ideas cannot originate from a single source idea?
I'm concerned that the nature of your scattergun series of questions might result in an unfocussed thread.
Further, are you looking for a Biblical discussion (such as the origin of diverse languages described in Genesis) or a scientific one (ideas cannot diversify from single point of origin and this disproves the Bible)?
IF you are unsure of what I'm asking of you feel free to ask. Some people recommend participating in existing threads before attempting to propose a new topic, helping to get an idea of what is expected here first. Either way, I hope you enjoy your stay, happy debating.