Korea split to prevent war . North Korea wanted Korea to be a whole country like it once was. They invaded South Korea and that officially started the war.
were was the split?
North and South Korea Korea split after WWll it was divided the Soviet Union controlled North and the South was controlled by the United States and the North wanted to stay communist. After the WWII, Korea was divided into North and South by the 38th parallel.
map
This is where the South and the North Korea meet by the 38th parallel.