The Dong Son civilization that covered much of Southeast Asia was also the beginning of Vietnam's history. In 221 BC, the Qins invaded the land of the Viet tribes. Thuc Phan, leader of the alliance of Au-Viet tribes managed to expel the enemies and declared himself King An Duong Vuong and his territory Au Lac Nation (257-207 BC). In 208 BC, a Qin Dynasty general named Triệu Đà invaded Au Lac. An Duong Vuong failed this time. As a result, the northern feudalist took turns dominating the country over the next eleven centuries, establishing their harsh regime in the country and dividing the country into administrative regions and districts with unfamiliar names. However, the country's name of Au Lac could not be erased from the people's minds in their everyday life.