Avars were a Mongolian tribe
Have a large empire in Central Asia from borders of China to Caspian Sea
In middle of 6th cent were driven westward by the Turks when a severe drought caused by volcano eruptions weakened their empire
Avars were totally dependent on horses for food and transportation Horses are very finicky about grasses they eat
When drought caused steppe grasses to dry up, horses could not cope
Turks took advantage and drove the Avars westward to what is now the Balkans and Hungry - where subjugated Slavic tribes
What is why many Slavic people exhibit Asiatic features h