The Indonesian flag is a simple yet striking design, consisting of two equal horizontal bands of red and white. The red band is at the top, and the white band is at the bottom. The flag's design is based on the banner of the Majapahit Empire, which ruled Indonesia in the 13th to 15th centuries. The red and white colors have significant meaning, representing courage and purity, respectively. The flag was adopted on August 17, 1945, when Indonesia declared its independence. Since then, it has become a symbol of national pride and identity for the Indonesian people.