Genocide is defined as mass murder. It is done to eradicate a race, an ethnic group, or a nation.
C. The Mongol Sack of Baghdad in 1258 is an example of genocide.
Mongol soldier killed the citizens of Baghdad regardless if said citizen is a man, a woman, or a child. It was said that the death toll ranged from 200,000 to 1 million people of Baghdad resulting to it being depopulated.