Who ended the Song dynasty?

Mongol attackers from the north

Japanese troops from the east

Mughal invaders from the west

Persian armies from the south

The correct answer is the first option - Mongol attackers from the north ended the Song dynasty. The Song dynasty made an agreement with Ögodei Khan, leader of Mongols, to bring down together the Jin dynasty, but generals of the Song dynasty broke the alliance. Breaking the alliance enraged Ögodei Khan which resulted in ending the Song dynasty and slaughtering of over a million people that inhabited the city of Chengdu.