I had one day off from the work and spent some time trying to find websites that I frequently visited 15 years ago. (Regarding this, see another blog post).
Finally I found my way to The Red Book of the Peoples of the Russian Empire. On that website I found my way to some minor languages spoken in the Caucasian Mountains. These Lezgian languages today struggle for their lives to survive and keep their own culture.
After the latest ice age, Europe got free from the ice and the population could move to new areas from the refuges — or the inhabited areas during the ice age.
During this era Europe underwent the neolithic revolution, the time when people switched from hunter gathering to domestication. It is assumed that the Indo-Europeans brought the domestication to Europe and therefore won terrain over the other linguistic groups.
I was cleaning my old PC from files that I downloaded years ago.
Guess what I found? Well, old files from The Indo-European Database website. I kept spending time on this site in the beginning of this millennium. The site that focused on Indo-European languages featured language overviews, linguistic maps, and much more.