Offa's Dyke is constructed around this time, according to the traditional history of this defensive earthwork. This 150-mile-long (240 km) earthwork marks the current border with the Welsh kingdoms, between England and Wales (approximate date). However, modern analysis of Offa's Dyke suggests that it was built in the 5th century, well before the reign of King Offa.
China
Former emperor Xuanzong is placed under house arrest by the eunuch official Li Fuguo, with the support of Xuanzong's son, Suzong. Li Fuguo is appointed commander of the Imperial Guards, possessing nearly absolute power during Suzong's reign.