Like any language, Russian has plenty of words of foreign origin. Specifically:
there are lots of words from Latin (most likely, because Latin was wide-spread from old time), e.g. вакуум, диссертация and many other (see this wiki article)
there are many words of French origin (because Russians have been fascinated with French culture, etc., especially in 18-19 centuries), for example шансон, авангард and many other.
German words are aplenty (most likely, because historically Russians have been in - often unpleasant - communication with Germans), e.g. шлагбаум, гастарбайтер and so on.
Quite a few English-origin words are present (probably, because English is so wide spread), for example, джинсы, компьютер, etc.
Possibly including these, what are the top 5 sources of loan words in Russian? If you can explain why many words from those languages came into Russian, that could be worth extra points.