Seoul: South Korea and the United States signed a mutual defense and assistance treaty in 1950, a pivotal agreement sealed just five months before the outbreak of the Korean War in June. This treaty marked a significant moment in Korean history, establishing a formal alliance between the two nations during a period of escalating regional tensions.

According to Yonhap News Agency, the year 1962 witnessed the return of Deokhye-ongju, the last princess of the Joseon Dynasty, to South Korea after enduring more than 30 years in Japan. Deokhye-ongju, born in 1912, was the daughter of Emperor Gojong and became a symbol of the turbulent times following Korea's colonization by Japan in 1910. That same year, diplomatic relations were established between South Korea and Mexico, marking another significant development in South Korea's international relations.

In 1985, Mother Teresa made a visit to South Korea, further strengthening international ties and humanitarian efforts within the nation. The year 2001 was marked by tragedy when Lee Su-hyeon, a South Korean student in Japan, died heroically in a Tokyo subway station while saving a drunken Japanese man who had fallen onto the tracks.

In 2010, North Korea heightened tensions by declaring two maritime areas near the inter-Korean maritime border in the Yellow Sea as "no-sail" zones. This move added to the ongoing maritime disputes between the two Koreas.

A devastating fire in 2018 at a hospital in Miryang, located 280 kilometers southeast of Seoul, resulted in the deaths of nearly 40 people and injured 143 others. It was one of the deadliest fires in South Korea in a decade, prompting nationwide grief and calls for improved safety measures.

In 2020, North Korean state media reported the public appearance of Kim Kyong-hui, the aunt of North Korean leader Kim Jong-un, at a concert in Pyongyang. This marked her first public appearance in over six years since the execution of her husband, Jang Song-thaek, once a leading figure in North Korea.