Who found it?
Communist is a curl way to live but others think it is not.Mao Zedong the great "Father of communism". Founded in China and now 4 other countries.
North Korea vs South Korea
North Korea followed this new a to rule. So they invaded South Korea to become whole as a country. They didn't want live under this type of rule and they fought back against North Korea. In the end South Korea stay democratic and North Korea is still under communist control.