What's the difference between i.e. and e.g.?
mountain range between Europe and the Middle East, from Latin Caucasus, from Greek kaukasis, said by Pliny ("Natural History," book six, chap. XVII) to be from a Scythian word similar to kroy-khasis, literally "(the mountain) ice-shining, white with snow." But possibly from a Pelasgian root *kau- meaning "mountain."
Note: Oil is its major resource. In World War II, the Germans tried to seize or neutralize this resource but were driven back by the Soviets.