A military group led by Pol Pot enforced extreme martial law upon the people.
Even kids were tortured and executed by the army.
There were massive fields and swamps of dead humans.
Pol Pot died in his sleep and was never indicted by the UN.
The army tried to create what is being termed "agragarian" society, which is a society I guess that farms all the time and doesn't have technology. I'm not too sure of that so you'll have to research the meaning of that.
There was actually an award-winning movie made about it.
The Vietnamese government heard about it and invaded Cambodia and liberated the people from the army.
