South Korea Flag
The Flag of South Korea, or Taegukgi (sometimes also romanized as Taegeukgi) is the national flag for the Republic of Korea. It has three parts: a white background, a red and blue Taeguk, which is a red and blue Taiji yin- and yang-symbol in the center, and four black trigrams, which are selected from the original eight, on each corner of the flag.
The white background is a traditional Korean color. It represents peace and purity. The circle in the middle is derived from the philosophy of yin and yang and represents the balance of the universe. The blue section represents the negative cosmic forces, and the red section represents the opposing positive cosmic forces. The trigrams together represent the principle of movement and harmony. Each trigram (hangul: kwae) represents one of the four classical elements.
The lack of the national flag only became an issue in 1876, in the Joseon Dynasty. Before 1876, a national flag did not exist and it was not considered important. The issue began during the negotiations for the Japan-Korea Treaty of 1876. Although the delegate of the Empire of Japan had the Japanese national flag, Joseon Dynasty could not hang a corresponding flag. Thus, there were some proposals to create a flag, but the issue was considered unimportant by the government. At 1880, the proliferation of foreign negotiations led to a need for the national flag.
The most major proposal was described in the ‘Korea Strategy’ papers written by the Chinese delegate Huang Zunxian. The proposal was to incorporate the Flag of the Qing Dynasty for the Joseon Dynasty. In response to the proposal, the government sent the delegate of Lee Young-Sook to explore the possibility of the issue through the politician Li Hongzhang. Li Hongzhang agreed with some parts of the proposal, but proposed that some other factors should be differed. The Qing Dynasty agreed with Hongzhang, but it is unknown how far the Joseon government explored this proposal.
The issue was then shelved, and reemerged with the ratification of the United States-Korea Treaty of 1882. The controversy arose after the delegate Lee Eung-Jun presented a flag similar to the flag of Japan to the Chinese official Ma Jianzhong. In response to the discussion, Ma Jianzhong argued against the proposed idea of using the Flag of the Qing Dynasty and proposed a flag with a white background, with a half-red and half-black circle in the center, with eight black bars around the flag. On August 22, 1882, Park Yeong-hyo created a scale model of the Taegukgi to the Joseon government. Park Yeong-hyo became the first person to use the Taegukgi in the Empire of Japan on 1882. On January 27, 1883, the Joseon government officially promulgated Taegukgi to be used as the official national flag.
Before the division of Korea, the current South Korean flag was used for the entire country. However, after the separation, the flags divided into Flag of South Korea and the Flag of North Korea. The current Korean flag was declared official by the government of South Korea on October 15, 1949. Wikipedia