Politics by region

category of countries on socio economic base

conceptual country classification

thumb|right|300px|Territorial history of the Balkans from 1796 to 2008

countries allied with the United States and NATO during the Cold War

geopolitical classification

Highly developed high income countries

political concept during the Cold War

Xenelasia (, ) or xenelasy was the practice in ancient Doric Crete and Lacedæmonia of expelling foreigners deemed injurious to the public welfare. The isolationist customs of Sparta (which included discouraging Spartan citizens from traveling outside the commonwealth) may also sometimes be referred to as xenelasia. The majority of ancient Greek authors attribute the codification of this practice to Lycurgus.

way language and linguistic differences between peoples are dealt with in the political arena