What is the Subject matter of the Film Casablanca?

"Casablanca" is set during World War II in German-occupied Morocco and revolves around themes of love, sacrifice, and moral ambiguity. The story follows Rick Blaine, an American expatriate who runs a nightclub in Casablanca, as he confronts his past when his former lover, Ilsa Lund, reappears with her husband, Victor Laszlo, a resistance leader. The film explores the complexities of relationships against the backdrop of war and the struggle between personal happiness and the greater good. Ultimately, it highlights the choices individuals must make in times of crisis.