Some, like Switzerland, have multiple languages spoken (French, German, Italian, Romansch). Multiculturalism can be a source of tension: Multi-ethnic rivalries (Albanians, Bosnians, Croats, Serbs) within the former country of Yugoslavia have caused bitter conflict.
This area is often called a shatter-belt because the once communist country split into five separate countries.
Europe is a peninsula of the Eurasian supercontinent.
peninsula of peninsulas: A peninsula is a piece of land surrounded by water on three sides.
While today’s problem for developing countries is the high level of poverty due to high fertility, tomorrow’s problem will be avoiding a decline in living standards in countries with aging populations and declining workforces.