Battle of Baekgang
The Tang dynasty aided the Korean kingdom of Silla (see also Unified Silla) and expelled the Korean kingdom of Baekje with the aid of Japanese naval forces from the Korean peninsula (see Battle of Baekgang) and conquered Silla's Korean rivals, Baekje and Goguryeo by 668. In addition, the Tang had maritime trading, tributary, and diplomatic ties as far as modern Sri Lanka, India, Islamic Iran and Arabia, as well as Somalia in East Africa.