The flag of Indonesia, which is very similar to the flag of Monaco, has been adopted after gaining the independence in 1945. It consists of two horizontal stripes, where the top one is red and the bottom one is white. These colors may refer to the widely used cotton and red dye made from shells of shellfish. Another interpretation is talking about duality between heaven and earth, purity and justice, and courage and freedom. The flag appeared already around the 13th century, when a royal dynasty Majapahit ruled Indonesia. Later, it reappeared during the fights against the Dutch rule. Unofficially, the flag is called "Sang Saka Merah Putih" - "Noble red and white flag".