Universal history preceded by the Bronze Age. Its date and context vary depending on the country or geographical region. During the 13th to 12th centuries BC, the Ramesside Period occurred in Egypt. Around c. 1200 BC, the Trojan War was thought to have taken place. By c. 1180 BC, the disintegration of the Hittite Empire was underway. In 1046 BC, the Zhou force, led by King Wu of Zhou, overthrows the last king of the Shang Dynasty. The Zhou Dynasty is established in China shortly thereafter. In 1000 BC, the Mannaeans Kingdom begins in Western Asia. Around the 10th to 7th centuries
Seleucid Empire of this distraction, Bactria and Parthia seceded from the empire. In Asia Minor too, the Seleucid dynasty seemed to be losing control: the Gauls had fully established themselves in Galatia, semi-independent semi-Hellenized kingdoms had sprung up in Bithynia, Pontus, and Cappadocia, and the city of Pergamum in the west was asserting its independence under the Attalid Dynasty. The Seleucid economy started to show the first signs of weakness, as Galatians gained independence and Pergamum took control of coastal cities in Anatolia. Consequently, they managed to partially block contact with the West. A revival would begin when Seleucus II's younger son,