The long series of civil wars in China, there came an era is called Three Kingdoms Period
It could be argued that the main reason the attack at Pearl Harbor was so damaging is because at the time of the attack "nobody was prepared," since it took American troops longer than it should have to retaliate and return fire.
It didn't address slavery in the southern states
The people in the south were farmers.
They didn't have many factories in the south.
