In the first centuries AD, there was both trade and missionary activity by Indians to South-East Asia which resulted in the spread of Indian culture to the Malay Peninsula, Thailand, Vietnam etc. The spread of Indians to Cambodia resulted in the Khemer kingdom, who built the magnificient Hindu temples of Angkor Wat. Now here is a story which connects Korean history to India, more specifically to Ayodhya.
The origin of the historical ties can be traced back to the middle of the first century AD. According to Sam Kuk Yusa, the ancient history of Korea, Queen Huh, wife of legendary King Suro, who founded the Karak Kingdom, was born in Ayodhya.
Queen Huh was a princess of the kingdom. Her father, the king of Ayodhya, on receiving a divine revelation, sent her on a long sea voyage to the Karak kingdom in southern Korea to marry King Suro, states the lines inscribed on the plaque at the monument in Ayodhya. The clan that descended from the Ayodhya princess Huh and South Korean King Suros, today known as Kim-Hae-Kim clan, has a little over six million Huh descendants in the Republic of South Korea.[South Korea’s Ayodhya connection]