For 10 points, name this northeastern region of China.
This region's Khitans created the Liao Empire only to be overthrown by the Jin Dynasty of the Jurchens during the 12th Century. The people of this region allied with Wu Sangui and were led by Nurhaci. After the assassination of its warlord Zhang Zoulin in 1928, a Japanese invasion led to a puppet state here ruled by Pu-Yi. In 1644, the people from this region came into power after the Ming Dynasty ended, and established the Qing dynasty. For 10 points, name this northeastern region of China.
This region's Khitans created the Liao Empire only to be overthrown by the Jin Dynasty of the Jurchens during the 12th Century.
{Manchuria}