The nomadic Mongol tribes in Mongolia, Manchuria and Siberia united under which leader in the 1100s?
Inner Mongolia then taken over by the Khitan Empire (Liao dynasty), founded by the Khitans, a nomadic people originally from what is now the southern part of Manchuria and eastern Inner Mongolia. They were followed by the Western Xia of the Tanguts, who took control of what is now the western part of Inner Mongolia (including western Hetao) . The Khitans were later replaced by the Jurchens, precursors to the modern Manchus, who established the Jin dynasty over Manchuria and northern China. After Genghis Khan unified the Mongol tribes in 1206 and founded the Mongol Empire, the Tangut Western Xia empire was
Manchuria under Yuan rule War of the Two Capitals after the death of Yesün Temür, Mongolian princes and high-ranking Mongolian officials based in Manchuria and eastern Mongolia fought on both sides of the war. After the Red Turban Rebellion that overthrew the Mongol Yuan dynasty by the Ming dynasty in 1368, Manchuria was still under the control of the Mongols under the Northern Yuan dynasty based in Mongolia for a while. Naghachu, an Yuan official in Manchuria since 1362, won hegemony over the Mongol tribes in the region. In 1387 the Ming sent a military campaign to attack Naghachu. The campaign concluded with the