10 most difficult coun­tries riddles

Italian is an official language in Italy, San Marino, Switzerland and the Holy See. Italian is also used in some parts of Slovenia and Croatia.

Hispaniola is the second-largest island in the Caribbean (after Cuba). Its total population of 20M is shared almost equally between Haiti and the Dominican Republic. The population of Hispaniola is about twice as large as the population of Cuba (11M).

Tokelau is an island country and dependent territory of New Zealand.Three solar power stations provide 100% of current electrical demand from photovoltaics, with battery backup. The first power station was completed in August 2012. In total, 4,032 solar panels) each, making Tokelau the first nation in the world to be 100% powered by solar power.

Poland bordered Germany, the Protectorate of the Czech Republic and Moravia, Slovakia, Hungary, Romania, the USSR, Latvia and Lithuania.

El Hierro, nicknamed Isla del Meridiano (the "Meridian Island"), is the smallest and farthest south and west of the Canary Islands. The line of longitude running through El Hierro (Ferro), the westernmost of the Canary Islands, was known in European history as the prime meridian in common use outside of the future British Empire.

The coat of arms (Escudo de Armas) has a palm branch on its left and an laurel one on its right. All four share the same escutcheon or shield, consisting of three elements: the top left section shows the vicuña, the national animal representing the fauna of Peru; the tree in the top right section is the cinchona tree representing the national flora; and the bottom cornucopia with coins spilling from it represents the mineral resources of the country.

Argentina maintains the most permanent polar stations - 6, Chile - 5, Russia - 5.

Indonesia is the largest (1 905 000 km²), the smaller Alaska (1 718 000 km²), then Iran (1 648 000 km²), at the very end Mongolia (1 566 000 km²). If you doubt this result, look here - thetruesize.com.

According to a report by the United Nations Office on Drugs and Crime (UNODC), Honduras has the highest rate of homicide. Every day an average of 22-23 people are murdered here, which gives over 8,000 a year (85 percent killed by firearms).

The Boiling Lake is situated in the Morne Trois Pitons National Park, Dominica's World Heritage site. It is the second-largest hot lake in the world after the Frying Pan Lake in New Zealand. Its temperature range is from 180 to 197 °F (82–92 °C) along the edges, but at the centre it is actively boiling.