 After the unification of Korea by Silla, Tenmu decided to break diplomatic relations with the Tang dynasty of China, evidently in order to keep on good terms with Silla.Tenmu used religious structures to increase the authority of the imperial throne.During his reign there was increased emphasis on the tie between the imperial household and Ise Grand Shrine (dedicated to the ancestor goddess of the emperors, Amaterasu) by sending his daughter Princess Ōku as the newly established Saiō of the shrine, and several festivals were financed from the national budget.