1) In some areas that have experienced balkanization the term describes the collapse of multiethnic states into places that are now ethnically similar dictatorships and have undergone many serious political and social issues such as ethnic cleansing and civil war. As a result, balkanization, especially with regard to states and regions, is typically not a positive term as there is often much political, social and cultural strife that takes place when balkanization occurs.
2) No idea, sorry
3) The rugged Arctic islands have one of the most severe climates on Earth and were also home to over 220 nuclear tests between 1955 and 1990. The entire archipelago can get sealed in by ice for much of the year.
4) Higher demand
5) idk sorry