World Knowledge app gives more information about the World Counties and History. Top 10 Highest Currencies in the World Top 10 Military Powers in the World TOP 10 Counties with the highest population Top 10 Most Populated Cities in the World Top 10 Most Educated Countries in the World Top 10 Richest People in the World Top 10 Richest Countries in the World Top 10 Wonders of The World Top 10 Airports of The World Top 10 Poorest Countries of The World Top 10 Largest Countries of The World Top 10 Popular Websites of The World Top 10 World's Most Valuable Brands