The document provides information about North Rhine-Westphalia and the city of Düsseldorf in Germany. It notes that North Rhine-Westphalia has over 18 million inhabitants and is the most populous and economically powerful of Germany's 16 states. It then discusses details about Düsseldorf, the capital of North Rhine-Westphalia, including its population of over 600,000, status as a center for fashion and trade fairs, and cultural diversity with residents from over 60 countries. Finally, it introduces the Institut für Internationale Kommunikation (IIK) based in Düsseldorf, which offers language courses, exchange programs, and training services to promote international exchange.