This is a great source of information about countries throughout the world. One gets information about a myriad areas--geography, people and society, government, economy, energy, communications, transportation, military, and transnational issues.
One example: Djibouti. Geography--between Eritrea and Somalia in Eastern Africa.. People and society (just an example or two)--ethnic groups include dominantly Somali and Afar, only 8% of the population is 55 or over. Economy--gross domestic product per capita=$2,700, 181st in rank among all countries. Communications--land line telephones are # 193 among all countries and number of cell phones ran 181st. Transportation--three airports have paved runways; another ten do not.
There are other features, too. Appendices at the end of the book enumerate international organizations and groups (such as the African Union, NATO, and the like), a listing of international environmental agreements (such as the Kyoto Protocol on climate change), weights and measures, and reference maps.
A lot of information, allowing one to compare countries across the planet. Great resource.