The World Factbook is a comprehensive reference resource published by the Central Intelligence Agency (CIA) of the United States. It provides detailed information about the countries of the world, including data on geography, population, government, economy, and military. The Factbook is updated annually to ensure accuracy and relevance. Each entry in the World Factbook includes key statistics and facts, making it a valuable tool for researchers, students, and anyone interested in global affairs. It covers over 260 entities, including countries, territories, and regions, offering a snapshot of the world's political and economic landscape.