The Silla Kingdom unified the Three Kingdoms in 668 AD. The Unified Silla (668-935 AD) was the golden age of Korea. In Unified Silla, various silks, linens, and fashions were imported from Tang China and Persia. In the process, the latest fashions trend of Luoyang which included Chinese dress styles, the second capital of Tang, were also introduced to Korea, where the Korean silhouette became similar to the Western Empire silhouette. Under the influence of China's Tang dynasty, aristocratic women in United Silla started to wear their skirts over their jackets, which is a distinctive dress style worn by the women of the Tang dynasty. King Muyeol of Silla personally travelled to the Tang dynasty to voluntarily request for clothes and belts; it is however difficult to determine which specific form and type of clothing was bestowed although Silla requested the bokdu (幞頭; a form of hempen hood during this period), danryunpo (團領袍; round collar gown), banbi, baedang (䘯襠), and pyo (褾). Based on archeological findings, it is assumed that the clothing which was brought back during Queen Jindeok rule are "danryunpo" and "bokdu". The bokdu also become part of the official dress code of royal aristocrats, court musicians, servants, and slaves during the reign of Queen Jindeok; it continued to be used throughout the Goryeo dynasty. In 664 AD, Munmu of Silla decreed that the costume of the queen should resemble the costume of the Tang dynasty; and thus, women's costume also accepted the costume culture of the Tang dynasty. Women also sought to imitate the clothing of the Tang dynasty through the adoption of shoulder straps attached to their skirts and wore the skirts over the "jeogori". The influence of the Tang dynasty was very strong and the Tang court dress regulations were adopted in the Silla court.