OK, no takers on this one. In the 1760s Tsarina Ekaterina II of Russia published a manifesto inviting foreign migrants to move to Russia and set up homesteads in the vast, empty regions of Russia. First and foremost to answer her call were c. 25,000 Germans who jumped at the chance for free land, and they established a little over 100 villages along the southern Volga River, near modern Saratov. The west bank of this "Volga German" settlement became known as the "Mountainous Side" (Bergseite) and the east bank became known as the "Meadow Side" (Wiesenseite).
This German enclave ceased to exist during World War II as Stalin suspected everyone of treason, much less ethnic Germans even though the Volga Germans had a long history of serving Russia loyally in her wars. Stalin deported most to Kazakhstan, and from there many (most?) migrated "back" to Germany after the Soviet collapse in 1991.
OK, next question:
In 1458 Jiří z Poděbrad became King of Bohemia. What was different about Jiří's rule in Bohemia?