Fear of losing freedom, independence and territory leads to war. All fears are learned. Behaviorial psychologists say that the only fears we are born with are the fear of falling and the fear of loud noises. All our other fears are learned, and like a bad habits, can be unlearned. Fears are not real.
Fears are illusions.
Fears do not exist. They are your responses to ideas that you've created from unreal beliefs. They have power only because you give it to them. The fear at those times was so overwhelming that you thought you wouldn't survive into the next day. Well, you have survived, hopefully with the knowledge that the fears are usually more powerful than the thing we fear.