At last time i learning some Latin phrases. Of course, usually this language learning medicine students ( because their patients must got accustomed to "dead" language ), and i'm not from their "alma mater", but just this very useful for memory training. Besides, it's very useful, when you want to add some pathos
lingua latina non verpa canina est
Not only. The history of nation have an influence. For example, Russia took his religion from East Roman Empire, was under Mongolian feet 250 ears, that's why lot of russian words was taken from greek (like "krovaty, "vor") and mongolian ("saray","bazar") languages. The long wars and trading with Turkey gived their words too.cause Russian, Polish have a lot of words from German language ,
At the all, the russian alphabet - the greek alphabet with addons .
With Slavic nations one of the most funny story at the world - the common language base, but very hard division by culture and religion, because we live on civilization's boards. And all wanted to build their "common" empire with different degree of activity (with their nation lead, of course). That's why we fighting with Poland third century, but taking the Berlin together