Final answer:
The question relates to Master Shin representing the Korean taekwondo Association in the USA in 1968, set against a backdrop of political tension and division in Korea.
Step-by-step explanation:
The question pertains to the time when Master Shin came to the United States as a representative for the Korean taekwondo Association. This event is not specifically mentioned in the provided reference information; however, the historical context regarding Korea can be informative in understanding the situation around 1968. This was a period when North and South Korea were intensely divided both politically and ideologically, following the breakdown of reunification talks post World War II and the Korean War. During this time, South Korea was building its national identity and international presence, which could include efforts such as sending representatives abroad to promote Korean culture and national interests, such as taekwondo - a Korean martial art.