Pre-modern East Asia: to 1800: a cultural, social, and political history, Patricia Buckley Ebrey, Anne Walthall, James Palais, Cengage Learning, 2008, ISBN 978-0-547-00539-3, ... Unified Silla ... After Silla drove out Tang forces in 676, the government concentrated on consolidating its control and overcoming resistance. To win over aristocrats, privileges were granted to war heroes and important civil and military officials ...