What is this?.. 对比 World Factbook HD 的使用情况和统计数据

The World Factbook provides you with high quality information on every country in the world. Quickly and easily look up any country or capital in the world, and get loads of information on each one. Information including flags, maps, population, capital, land area and so much more. - population, birth, death rates, growth. - inflation, GDP, PPP - capital, region, closest cities, biggest cities - major religions practised - languages spoken and ratios - bordering countries - ethnic makeup - continent - government information - highest and lowest point - total area and land area - income level and current lending information - geography summary - history summary - capital weather and current time