The World Factbook is one of the US Government's most accessed publications.
The World Factbook, produced for US policymakers and coordinated throughout the US Intelligence Community, presents the basic realities about the world in which we live. We share these facts with the people of all nations in the belief that knowledge of the truth underpins the functioning of free societies. The Factbook is the only US intelligence publication that aims to collect and disseminate such authoritative, broadly-coordinated, comparable, and comprehensive facts about the world.  For over six decades, the highest-ranking leaders of the US Government have recognized the need for such a publication.
The World Factbook is a one-stop reference site.
Although many of the facts presented in The Factbook may be found in various other publications, they are conveniently gathered together in one place only at The World Factbook Web site.
该附件包含完整的实况，但不包括PDF格式参考地图，即链接PDF格式参考地图的页面将无法正常工作。（包括地图的完整文件大约有137MB，上传麻烦）
包括PDF格式参考地图的完整链接地址在下面：
https://www.cia.gov/library/publications/the-world-factbook/index.html