Which of the four countries of southern europe is richest, and which is the poorest?

Relatively steep zone that is compared with the shelf that marks the boundary between continental crust and ocean crust.

How can you use a maps legend to plan your travel

With these question would be nice i needs them in a hurry which nation leads eastern europe in nuclear energy usage? a ukraine b lithuania c slovakia d solvenia which eastern european nation is popular with skiers? a czech republic b estonia c bulgaria d none are