José de San Martín was defeated by the Luso-Brazilian armies, his allies Estanislao López and Francisco Ramírez continued hostilities against Buenos Aires for its inactivity against the invasion. Pueyrredón called the Army of the Andes and the Army of the North (led by Belgrano) to aid Buenos Aires in the conflict. Guido noted to San Martín that if both armies did that, the north of Argentina and Chile would be easily reconquered by the royalists. San Martín also knew that most of the soldiers of the Army of the Andes would not be willing to aid Buenos Aires in the civil war, as most
Army of the Han dynasty led a force to Wusun and resolved a dispute. In 6 AD, a petty king in the area of the former Jushi Kingdom defected to the Xiongnu, who turned him over to the Han. In 7 AD, the Han convinced the Wuhuan to stop sending tribute to the Xiongnu, who immediately attacked and defeated the Wuhuan. In 9 AD, Wang Mang proclaimed himself emperor of the Xin dynasty. In 10 AD, some officers of the Protector General Dan Qin rebelled, slew him, and fled to the Xiongnu. In 16 AD, an army under Li Chong and Guo Qin was sent