Cleanest nation in the world: in my travels, basically Europe, I would say Spain, at least the northern part I traveled in. Spotless train station bathrooms, which is how I tend to judge a country. Most impressive gardens and vegetables: definitely Hungary. Friendliest people: Ireland. Most impressive engineering and machinery: Czechoslovakia. Most reasonable: Austria. They also have these magic laundries that get your clothes whiter than white and very soft besides. Based on immigrants and visitors to US: most polite: Palestinians. Most cute babies: Iraqi. Healthiest food: Chinese. Worst: Irish. Most hospitable: Uzbek. Best singers: Welsh and South African. Best chemists (chemists used to swear this was true) from Sri Lanka. Best fishermen: Norwegians. Best at making beautiful objects out of common materials: Turks. well, that is all I have observed so far. Oh, I'll add one more..handsomist men: Scotland. Based on limited travel/exposure. Only opinions, not dogma.