The answer is racism. It is racism because they treated the Europeans from the north more better than Europeans from the south for no reason when they were essentially the same
B. and D.
I believe, but I am not 100% sure!
Confucianism biases its ideology on family and respect.
It allowed you to understand what people and what things were like back then it also allows you to feel and experience what was going on through the time period your studying.