This New York Times article, entitled "Kohr Principles" has excellent material for students to think about the spatial organization of political interactions. Leopold Kohr argued that size matters--and unlike most that argue for the same, he argued that political entities most not be too large. In the map above, Kohr envisioned a Europe without countries large enough to dream of world domination. So, how does a country's size shape its politics? Is there an ideal size for internal unity and external security?
Via Seth Dixon