On 1 January 1912, the Republic of China was established, heralding the end of Imperial China. Sun Yat-sen of the Kuomintang (the KMT or Nationalist Party) was proclaimed provisional president of the republic. However, the presidency was later given to Yuan Shikai, a former Qing general, who had ensured the defection of the entire Beiyang Army from the Qing Empire to the revolution. In 1915, Yuan proclaimed himself Emperor of China, but was forced to abdicate and reestablish the republic in the face of popular condemnation and opposition from his own Beiyang Army.