The national flag of Angola came into use when Angola gained independence on November 11, 1975. As outlined in the Constitution of Angola, the red half of the flag signifies bloodshed – during Angola's colonial period, independence struggle, and in defense of the country. The black half symbolizes Africa. In the central emblem, the gear represents industrial workers and production, the machete represents peasantry, agricultural production and the armed struggle and the star, shaped like the red star, symbolizes international solidarity and progress. The yellow color of the emblem symbolizes the country's wealth.