Which country was divided into east and west between 1940s and 1990s?

Germany was divided into East and West from the late 1940s until reunification in 1990. After World War II, the country was split into East Germany (the German Democratic Republic), aligned with the Soviet Union, and West Germany (the Federal Republic of Germany), aligned with the Western powers. This division symbolized the broader ideological conflict of the Cold War. The fall of the Berlin Wall in 1989 marked a significant step toward reunification, which was officially completed in October 1990.