In what century was Genghis Khan conducting campaigns of conquest in Asia?

Genghis Khan led campaigns of conquest in Asia in the 13th century. First, the Mongols captured East Turkestan and Semirechye. Then the Mongols began to oppose the largest city in Central Asia – Khorezm. During 1219-1221 the city is taken. Samarkand and the South Caucasus were also captured. As a rule, cities were captured by force or on the basis of certain treaties. With the state of Jin, Genghis Khan waged a difficult war. As a result, the territory from the north to the Chinese Wall was captured. Genghis Khan decided to marry a Chinese princess because of the rich dowry and to gain peace. The Chinese tried to deceive the Mongols, which led to their complete defeat.