stymied by his grandmother. 130s BC 139 BC: The assassination of Viriathus marks the end of the Lusitanian War. Mithradates I of Parthia defeats the Seleucid king Demetrius II Nicator and captures Babylonia. 138 BC: Minyue's invasion of Eastern Ou sparks off the Han campaigns against Minyue 135 BC Minyue's invasion of Nanyue leads to conquest of its western half by China. The eastern half survives as Dongyue. Eunus begins the First Servile War. 133 BC: Attalus III of Pergamon dies, bequeathing his kingdom to the Roman Republic. Emperor Wu sets an ambush for the Xiongnu, beginning the Han–Xiongnu War Assassination of Tiberius Gracchus. Scipio Aemilianus wins the Siege of Numantia and conquers the Celtiberians. 132 BC: Rioting on the streets of Alexandria leads to civil war between Ptolemy VIII and Cleopatra II. 130 BC: Greek astronomer Hipparchus continues lifelong studies, becoming the first to calculate the precession of moon and sun and to create a sizable catalog of stars. 120s BC 129 BC: Battle of Ecbatana: Antiochus VII Sidetes of the Seleucid empire attempt to reclaim the Iranian Plateau from Parthia ends in failure. 127 BC: Hyspaosines of Characene takes control of Babylonia. 126 BC: Ptolemy VIII regains control of Alexandria. 125 BC: Zhang Qian returns to China after a protracted journey through the west. 124 BC: Artabanus II of Parthia is killed in battle with the Yuezhi and succeeded by his son Mithridates II 122 BC: Mithradates II of Parthia regains control of Babylonia and Characene 121 BC: Assassination of Gaius Gracchus 110s BC 116 BC: (June 28) Ptolemy VIII of Egypt dies and is succeeded by his wife Cleopatra III and son Ptolemy IX Soter. 113 BC: The Cimbri and Teutones arrive on the banks of the Danube in Noricum, clashing with Roman allies, beginning the Cimbrian War. 112 BC: Jugurtha of Numidia's elimination of his co-regents sparks the Jugurthine War with Rome. 111 BC: A power struggle in Nam Viet leads to its conquest by China, ending the Triệu dynasty and beginning the First Chinese domination of Vietnam. 100s BC 109 BC China conquers Dian. King Ugeo of Gojoseon kills a Chinese envoy, sparking the Gojoseon–Han War. 108 BC: Chinese troops destroy Wanggeom seong, capital of Wiman Joseon, establishing the Four Commanderies of Han to govern the northern part of Korea. 107 BC: Roman consul Gaius Marius passes the Marian Reforms, which remove all ownership restrictions